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(2/3)*x-(7/2) = 9/4 // - 9/4
(2/3)*x-(7/2)-(9/4) = 0
(2/3)*x-7/2-9/4 = 0
2/3*x-23/4 = 0 // + 23/4
2/3*x = 23/4 // : 2/3
x = 23/4/2/3
x = 69/8
x = 69/8
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