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10*x-(3/4) = 3 // - 3
10*x-(3/4)-3 = 0
10*x-3/4-3 = 0
10*x-15/4 = 0 // + 15/4
10*x = 15/4 // : 10
x = 15/4/10
x = 3/8
x = 3/8
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