SOLUTION: how do u solve y=x-1 2x-y=0

Algebra.Com
Question 34068: how do u solve y=x-1
2x-y=0

Answer by fanism(39)   (Show Source): You can put this solution on YOUR website!
y=x-1 -- eq1
2x-y=0 -- eq2
sub eq1 into eq2
2x - (x-1) = 0
2x - x + 1 = 0
x + 1 = 0
x = -1
put back into eq1
y = -1 - 1
y = -2

RELATED QUESTIONS

how do u graph... (answered by oscargut)
how do u solve these problems -2x + y = 1-4x + y = -1 (answered by tommyt3rd)
How do u solve... (answered by josgarithmetic)
how do u graph... (answered by checkley77)
how do u solve the following: x=-6 y=6+x y=-x-1/4 (answered by Fermat)
how do u solve x squared +7x-1 equals... (answered by stanbon)
how do u solve this:... (answered by stanbon)
How do u do these kinda problems? y=2x-1... (answered by edjones)
how do u graph... (answered by Alwayscheerful)