SOLUTION: Find the solution by substitution: 4x+3y=5 2x-y=-5

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Question 149142: Find the solution by substitution:
4x+3y=5
2x-y=-5
Answer by mangopeeler07(462) About Me  (Show Source):
You can put this solution on YOUR website!
4x+3y=5
2x-y=-5

Solve for y in the second equation:
2x-y=-5
-y=-2x-5
y=2x+5

Plug that into the first equation
4x+3y=5
4x+3(2x+5)=5
4x+6x+15=5
10x+15=5
10x=-10
x=-1

Plug that into y=2x+5
y=2(-1)+5
y=-2+5
y=3

So,
x=-1
y=3