Solve for substitution of y=x-1 and 2x-y=0

Step One: Plug in (x-1) for y in 2x-y = 0

Step Two: Distribute the negative

Step Three: Add like terms on one side of the equation

Step Four: Subtract 1 from both sides

Step Five: Plug x into one original equation (I chose y=x-1 but you can do either one)

That's the answer to the problem, x = -1, y = -2 (-1,-2)!
Hope this helps!

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