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6*x-((15*15)/66) = 5/11 // - 5/11
6*x-((15*15)/66)-(5/11) = 0
6*x-75/22-5/11 = 0
6*x-85/22 = 0 // + 85/22
6*x = 85/22 // : 6
x = 85/22/6
x = 85/132
x = 85/132
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