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(2/5)*(x-16) = 9 // - 9
(2/5)*(x-16)-9 = 0
2/5*(x-16)-9 = 0
2/5*(x-16)-9 = 0
2/5*x-77/5 = 0
2/5*x-77/5 = 0
2/5*x-77/5 = 0 // + 77/5
2/5*x = 77/5 // : 2/5
x = 77/5/2/5
x = 77/2
x = 77/2
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