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8-x-(2/2) = x/4 // - x/4
8-x-(x/4)-(2/2) = 0
8-x-(x/4)-1 = 0
7-5/4*x = 0 // - 7
-5/4*x = -7 // : -5/4
x = -7/(-5/4)
x = 28/5
x = 28/5
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