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11*x-((11/2)*(x-5)) = 55 // - 55
11*x-((11/2)*(x-5))-55 = 0
(-11/2)*(x-5)+11*x-55 = 0
11*x-11/2*(x-5)-55 = 0
11*x-11/2*(x-5)-55 = 0
11/2*x-55+55/2 = 0
11/2*x-55/2 = 0
11/2*x-55/2 = 0
11/2*x-55/2 = 0 // + 55/2
11/2*x = 55/2 // : 11/2
x = 55/2/11/2
x = 5
x = 5
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