Go: package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
)

var scanner = bufio.NewScanner(os.Stdin)

func nextString() string {
	scanner.Scan()
	return scanner.Text()
}

func nextFloat64() (float64, error) {
	return strconv.ParseFloat(nextString(), 64)
}

func mathRound(f float64) float64 {
	return math.Floor(f + .5)
}

func round(x float64) float64 {
	if math.Abs(x) < 0.001 {
		return 0
	}
	return mathRound(x*1000) / 1000
}

func main() {
	scanner.Split(bufio.ScanWords)
	for {
		a, err := nextFloat64()
		if err != nil {
			break
		}
		b, _ := nextFloat64()
		c, _ := nextFloat64()
		d, _ := nextFloat64()
		e, _ := nextFloat64()
		f, _ := nextFloat64()

		detA := a*e - b*d
		x := (c*e - b*f) / detA
		y := (a*f - c*d) / detA

		fmt.Printf("%.3f %.3f\n", round(x), round(y))
	}
}

Python: # coding: utf-8
# Here your code !
#import math

x=2*[0.0]

for i in range(2):
    a,b,c,d,e,f = list(map(float, input().split()))

    if abs(a)<1e-9 :
        x[0] = (b*f - e*c)/b*d
        x[1] = c/b
    
    elif abs(b)<1e-9 :
        x[0] = c/a
        x[1] = (a*f - d*c)/a*e
        
    elif abs(d)<1e-9 :
        x[0] = (a*c - f*b)/a*e
        x[1] = f/e
        
    elif abs(e)<1e-9 :
        x[0] = f/d
        x[1] = (c*d - f*a)/b*d
    
    else:
        x[0] = (b*f - e*c)/(b*d - a*e)
        x[1] = (c - a*x[0])/b
        
    print("%.3f %.3f"%(round(x[0],3), round(x[1],3)))

Python: while(True):
    try:
        a, b, c, d, e, f = map(float, input().split())
        det = e*a - b*d
        if(det !=0):
            x = (e*c - b*f)/det
            y = (f*a - c*d)/det
        print("{:.3f} {:.3f)".format(x+0,y+0))
    except:
        break

Python: import sys
#import numpy as np
# AOJではnumpy使えません
#np.set_printoptions(formatter={'float': '{: 0.3f}'.format}) #桁を揃える

lines = sys.stdin.readlines()
for line in lines:
    a = list(map(float, line.split(" ")))
    tmp = a[0]
    for i in range(0, 3):
        a[i] = a[i] * a[3]
    for i in range(3, 6):
        a[i] = a[i] * tmp
    y = (a[2] - a[5]) / (a[1] - a[4])
    x = (a[2] - a[1] * y) / a[0]
    print("{0:0.3f}".format(x), "{0:0.3f}".format(y))

Python: # coding: utf-8
# Your code here!
import numpy as np

while True:
    try:
        a,b,c,d,e,f = map(int, input().split())
        l=np.dot(np.linalg.inv(np.array([a,b,d,e]).reshape(2,2)),np.array([c,f]))
        print('%.3f %.3f' % (l[0],l[1]))
    except:
        break

Python: import sys

for line in sys.stdin:
    array = [float(x) for x in line.split()]
    ar1 = array[0:3]
    ar2 = array[3:]
    i = ar1[0]
    ar1 = [x*ar2[0] for x in ar1]
    ar2 = [x*i for x in ar2]
    y = (ar1[2] - ar2[2])/(ar1[1]-ar2[1])
    ar1 = array[0:3]
    x = (ar1[2]-ar1[1]*y)/ar1[0]
    print('%.3f %.3f' % (round(x,3), round(y,3)))

Python: import sys
for line in sys.stdin:
    a, b, c, d, e, f = map(float, line.split())
    x = (c*e - b*f) / (a*e - b*d)
    y = (a*f - c*d) / (a*e - b*d)
    if x == -0.0:
        x = 0
    if y == -0.0:
        y = 0
    print('{:.3f} {:.3f}'.format(x, y))

Python: # -*- coding: utf-8 -*-

import math

while True:
  try:
    ( a, b, c, d, e, f ) = map ( float, input ( ).split ( ) )
  except EOFError: break
  x = ( c * e - b * f ) / ( a * e - b * d )
  y = ( a * f - c * d ) / ( a * e - b * d )
  print ( "%.3f %.3f" % ( math.floor ( x * 1000 + 0.5 ) / 1000, math.floor ( y * 1000 + 0.5 ) / 1000 ) )

Python: while True:
	try:
		a, b, c, d, e, f = map(int, raw_input().split())
		D = a*e - b*d
		Dx = c*e - b*f
		Dy = a*f - c*d
		print("%.3f %.3f" % (Dx/D, Dy/D))
	except EOFError:
		break

Python: while True:
	try:
		A=[int(j) for j in input().split()]
		a=A[3]/A[0]
		for i in range(3):
			A[i]*=a
		for i in range(3):
			A[i]=A[i]-A[i+3]
		y=A[2]/A[1]
		x=(A[5]-A[4]*y)/A[3]
		print(x,y)
	except EOFError:
		break

Python: #!/usr/bin/env python3
import sys

EPS = 1e-10

for line in sys.stdin:
    a, b, c, d, e, f = map(float, line.split())
    x = (e * c - b * f) / (a * e - b * d)
    y = (a * f - c * d) / (a * e - b * d)
    print('{:.3f} {:.3f}'.format(x + EPS, y + EPS))

Python: import sys
import numpy as np
#np.set_printoptions(formatter={'float': '{: 0.3f}'.format}) #桁を揃える

line = sys.stdin.readlines()
#print(line)
for i in line:
    cnt = 0
    idx = 0
    a = np.array([0.0, 0.0, 0.0, 0.0])
    b = np.array([0.0, 0.0])
    for k in list(map(float, i.split(" "))):
        if cnt == 2:
            b[0] = k
            idx -= 1
        elif cnt == 5:
            b[1] = k
        else:
            a[idx] = k
        cnt += 1
        idx += 1
    #print(a, b)
    a = a.reshape(2, 2)
    x = np.linalg.solve(a, b)
    print('{0: .3f} {1: .3f}'.format(x[0], x[1]))

Python: inputs = []
while True:
  try:
    inputs.append(list(map(float,input().split())))
  except EOFError:
    break

for i in inputs:
  x=(i[2]*i[4]-i[1]*i[5])/(i[0]*i[4]-i[1]*i[3])
  y=(i[0]*i[5]-i[2]*i[3])/(i[0]*i[4]-i[1]*i[3])
  print("{0:.3f} {1:.3f}".format(x,y))

Python: while True:
    try:
        a, b, c, d, e, f = map(float, input().split())
        x = round((c * e - b * f) / (a * e - b * d), 3)
        y = round((a * f - c * d) / (a * e - b * d), 3)
        print('{0:.3f} {1:.3f}'.format(x + 0, y + 0))
    except:
        break

Python: #_*_ coding:utf-8 _*_
import sys


while True:
    vals = sys.stdin.readline()
    if(vals is  None or vals.strip() == '' ):
        break
    a,b,c,d,e,f=list( map(float,vals.strip().split()))
    temp = a * e - d * b
    x = (c * e - b * f) / temp + 0.0
    y = (c * d - a * f) / -temp + 0.0
    print('%.3f %.3f' % (x,y))

Python: try:
        while 1:
                a, b, c, d, e, f = map(float,raw_input().split())
                x = (c/b-f/e) / (a/b-d/e)
                y = (c/a-f/d) / (b/a-e/d)
                if x == 0:
                        x = 0
                if y == 0:
                        y = 0
                print("{:.3f} {:.3f}".format(x,y))
except:
        pass

Python: # usr/bin/python
# coding: utf-8
################################################################################
# Simultaneous Equation
# Write a program which solve a simultaneous equation:
#
# ax+by=c
# dx+ey=f
#
# The program should print x and y for given a, b, c, d, e and f (-1,000 ??? a,b,c,d,e,f ??? 1,000). You can suppose that given equation has a unique solution.
#
# Input
# The input consists of several data sets, 1 line for each data set. In a data set, there will be a,b,c,d,e,f separated by a single space. The input terminates with EOF.
#
# Output
# For each data set, print x and y separated by a single space. Print the solution to three places of decimals. Round off the solution to three decimal places.
#
# Sample Input 1
# 1 2 3 4 5 6
# 2 -1 -2 -1 -1 -5
# Output for the Sample Input 1
# -1.000 2.000
# 1.000 4.000
# Sample Input 2
# 2 -1 -3 1 -1 -3
# 2 -1 -3 -9 9 27
# Output for the Sample Input 2
# 0.000 3.000
# 0.000 3.000
#
################################################################################

import fileinput

if __name__ == "__main__":
    for line in fileinput.input():
        a = float(line.split(" ")[0])
        b = float(line.split(" ")[1])
        c = float(line.split(" ")[2])
        d = float(line.split(" ")[3])
        e = float(line.split(" ")[4])
        f = float(line.split(" ")[5])

        x = (e*c-b*f)/(a*e-b*d)
        y = (-d*c+a*f)/(a*e-b*d)
        print("{: .4f} {: .4f}".format(round(x,4),round(y,4)))
    pass

Python: # AOJ 0004 Simultaneous Equation
# Python3 2018.6.9 bal4u
 
EPS = 0.0001
while True:
    try:
        a = list(map(float, input().split()))
        dd = a[0]*a[4]-a[3]*a[1]
        d1 = a[2]*a[4]-a[5]*a[1]
        d2 = a[0]*a[5]-a[3]*a[2]
        print("{0:.3f} {1:.3f}".format(d1/dd+EPS, d2/dd+EPS))
    except EOFError:
        break