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(5/2)*x-((2/2)*x) = 6 // - 6
(5/2)*x-((2/2)*x)-6 = 0
(5/2)*x-x-6 = 0
3/2*x-6 = 0 // + 6
3/2*x = 6 // : 3/2
x = 6/3/2
x = 4
x = 4
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