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7*(5*x-11) = (2/3)*(18-(9*x))+12 // - (2/3)*(18-(9*x))+12
7*(5*x-11)-((2/3)*(18-(9*x)))-12 = 0
7*(5*x-11)+(-2/3)*(18-9*x)-12 = 0
7*(5*x-11)-2/3*(18-9*x)-12 = 0
7*(5*x-11)-2/3*(18-9*x)-12 = 0
41*x-89-12 = 0
41*x-101 = 0
41*x-101 = 0
41*x-101 = 0 // + 101
41*x = 101 // : 41
x = 101/41
x = 101/41
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