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(9/2)*x-(3/2) = 51/2 // - 51/2
(9/2)*x-(3/2)-(51/2) = 0
(9/2)*x-3/2-51/2 = 0
9/2*x-27 = 0 // + 27
9/2*x = 27 // : 9/2
x = 27/9/2
x = 6
x = 6
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