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(2*x^1)/2-((x^1)/4) = 3 // - 3
(2*x^1)/2-((x^1)/4)-3 = 0
(2*x)/2-(x/4)-3 = 0
3/4*x-3 = 0 // + 3
3/4*x = 3 // : 3/4
x = 3/3/4
x = 4
x = 4
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