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8*x+3*x-(4/4)-(9/2) = -9 // + 9
8*x+3*x-(4/4)-(9/2)+9 = 0
8*x+3*x-9/2-1+9 = 0
11*x+7/2 = 0 // - 7/2
11*x = -7/2 // : 11
x = -7/2/11
x = -7/22
x = -7/22
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