Question

What is the value of x in the solution to this system of equation y+2x=-1 and y=1/2x+4

Answer 1

x=-25/2, y=-9/4. (-25/2, -9/4).

Explanation:

y+2x=-1

y=1/2x+4

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1/2x+4+2x=-1

1/2x+4/2x=-1-4

5/2x=-5

x=-5/(5/2)

x=(-5/1)(5/2)

x=-25/2

y=(1/2)(-25/2)+4

y=-25/4+4

y=-25/4+16/4=-9/4