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(2*x)/3+3/2 = 9 // - 9
(2*x)/3+3/2-9 = 0
2/3*x-15/2 = 0 // + 15/2
2/3*x = 15/2 // : 2/3
x = 15/2/2/3
x = 45/4
x = 45/4
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