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4*x+7/4 = 5*x-(7/4) // - 5*x-(7/4)
4*x-(5*x)+7/4+7/4 = 0
4*x-5*x+7/4+7/4 = 0
7/2-x = 0 // - 7/2
-x = -7/2 // * -1
x = 7/2
x = 7/2
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