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(3*x)/2 = 5.7*8.9 // - 5.7*8.9
(3*x)/2-(5.7*8.9) = 0
(3*x)/2-50.73 = 0
3/2*x-50.73 = 0 // + 50.73
3/2*x = 50.73 // : 3/2
x = 50.73/3/2
x = 33.82
x = 33.82
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