how to solve -x+2y=-2 y=-x+2 with process of elimination    

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I'm assuming there are two equations and two unknowns here -x +2y =-2 x +y = 2 after adding x to both sides of the second equation Add these two equations together.  That gives you 3y = 0 so y = 0 Then solve for x in either equation: 0 = -x +2 or x = 2