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(9/2)*x-(7/2) = 47/2 // - 47/2
(9/2)*x-(7/2)-(47/2) = 0
(9/2)*x-7/2-47/2 = 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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