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3*x-(7/2) = x/3 // - x/3
3*x-(x/3)-(7/2) = 0
3*x-(x/3)-7/2 = 0
8/3*x-7/2 = 0 // + 7/2
8/3*x = 7/2 // : 8/3
x = 7/2/8/3
x = 21/16
x = 21/16
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