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x = y = 0 ?
6
x-y=0 x=y so you will use that in the other equation by substituting every y with x 2x+y=0 2x+x=0 3x=0 x=0/3 x=0 then use that in the previous equation by substituting every x with 0 x=y 0=y; y=0 finally x=0 and y=0
y = 6
y = x2 + x = 0 x (X + 1) = 0 x = 0 is one solution x = -1 is the other