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(7/2)*x+x = x+7/4 // - x+7/4
(7/2)*x+x-x-(7/4) = 0
(7/2)*x+x-x-7/4 = 0
7/2*x-7/4 = 0 // + 7/4
7/2*x = 7/4 // : 7/2
x = 7/4/7/2
x = 1/2
x = 1/2
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