The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: solve the equation for x : 6 x - 47 + 3 x = 4 + 9 - x

Output: 


Input: Consider Input: Problem: find the greatest number that will divide 205 , 626 and 588 leaving 5 , 6 and 8 as remainders respectively

Output: 2


Input: Consider Input: Problem: a certain lab experiments with white and brown mice only . in one experiment , 2 / 3 of the mice are white . if there are 7 brown mice in the experiment , how many mice in total are in the experiment ?


Output: 21