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4*x-(5/3) = 9 // - 9
4*x-(5/3)-9 = 0
4*x-5/3-9 = 0
4*x-32/3 = 0 // + 32/3
4*x = 32/3 // : 4
x = 32/3/4
x = 8/3
x = 8/3
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