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2(2x - y) = 8 }
{2x + y = -2 /×2
4x - 2y = 8}
{4x + 2y = -4
4x - 2y = 8}
8x = 4 /÷8
x = 0.5
2(2x - y) = 8 4x-2y=8 4x-2y=8
8x=4 x=0,5
y=-2-2x=-2-2*0,5=-2-1=-3
x=0,5
y=-3