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(2/3)*x-((5/8)*x) = 26 // - 26
(2/3)*x-((5/8)*x)-26 = 0
(2/3)*x+(-5/8)*x-26 = 0
1/24*x-26 = 0 // + 26
1/24*x = 26 // : 1/24
x = 26/1/24
x = 624
x = 624
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