SOLUTION: Trying to solve by using the elimination method 4x-9y=10.5 7y-2x=-6.5

Algebra ->  Test -> SOLUTION: Trying to solve by using the elimination method 4x-9y=10.5 7y-2x=-6.5      Log On


   



Question 327004: Trying to solve by using the elimination method
4x-9y=10.5
7y-2x=-6.5

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.4x-9y=10.5
.
.
7y-2x=-6.5
2.-2x%2B7y=-6.5
Multiply eq. 2 by 2 and add to eq. 1 to eliminate x.
4x-9y-4x%2B14y=10.5-13
5y=-2.5
highlight%28y=-0.5%29
Then use either equation to solve for x.
-2x-3.5=-6.5
-2x=3
highlight%28x=-1.5%29