Question

Y=2x-7 2x+y=5 solve the system

Answer 1

x=3 y=-1

Explanation:

y=2x-7

2x+y=5

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2x+2x-7=5

4x-7=5

4x=12

x=3

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2(3)-7=y

6-7=y

-1=y

Answer 2

Make it 2x-y=7, 2x+y=5, now do elimination. -2y=2, y=-1.
Plug in -1 for y and solve for x
2x+1=7, x=3
Final answer: x=3, y=-1