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

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Question 34068: how do u solve y=x-1
2x-y=0
Answer by fanism(39) About Me  (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