SOLUTION: solve the simultaneous equation: 4x-3y=7 2x+2y=7

Algebra ->  Equations -> SOLUTION: solve the simultaneous equation: 4x-3y=7 2x+2y=7      Log On


   



Question 844039: solve the simultaneous equation:
4x-3y=7
2x+2y=7

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

1.4x-3y=7
2.2x%2B2y=7
Multiply eq. 2 by 2 and subtract from eq. 1,
4x-3y-4x-4y=7-14
-7y=-7
y=1
Then use either equation to solve for x
2x%2B2=7
2x=5
x=5%2F2