Khan/khan-exercises — Issue #11144: Systems of equations - Systems of Equation
Author: KhanBugz
Created: 2012-01-13 17:15:59+00:00
State: open
Labels: ie8, wrong-or-unclear, xp

Reporter: eddiemaza24@yahoo.com

I have attempted findig the solution to this equation, having trouble with finding the solution I requested assitence from my school's Math teacher who has passed the Calculous exam for teaching and after spending time finding the solution, we believe the correct solution to this equation is x=-1/11 y=-8/11 Also there might be a solution error to the"finding the solution" option on this problem, as shone: 7x−5y −9x+3y =3 =3 Begin by moving the x x-term in the second equation to the right side of the equation.

3y=9x+3 3y = 9x+3

Divide both sides by 3 3 to isolate y y.

y=3x+1

[systems_of_equations.html?seed=13&problem=substitution-y](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations.html?seed=13&problem=substitution-y&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/systems_of_equations.html?seed=13&problem=substitution-y&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%22-1%2F11%5C%22%2C%5C%228%2F11%5C%22%5D%22%2C364%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%220%5C%22%2C%5C%22-3%2F5%5C%22%5D%22%2C200%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%220%5C%22%2C%5C%22-1%5C%22%5D%22%2C12%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C10%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-1%2F11%5C%22%2C%5C%22-8%2F11%5C%22%5D%22%2C556%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%224%5C%22%2C%5C%2211%5C%22%5D%22%2C136%5D%5D)

[["-1/11","8/11"],["0","-3/5"],["0","-1"],["-1/11","-8/11"],["4","11"]]

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