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3*x+(3/4)*x-2 = 7/4 // - 7/4
3*x+(3/4)*x-(7/4)-2 = 0
3*x+(3/4)*x-7/4-2 = 0
15/4*x-15/4 = 0 // + 15/4
15/4*x = 15/4 // : 15/4
x = 15/4/15/4
x = 1
x = 1
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