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(2/3)*x-(5/8) = 26 // - 26
(2/3)*x-(5/8)-26 = 0
(2/3)*x-5/8-26 = 0
2/3*x-213/8 = 0 // + 213/8
2/3*x = 213/8 // : 2/3
x = 213/8/2/3
x = 639/16
x = 639/16
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