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3*x+8*x-(3/8)+5/4 = 8 // - 8
3*x+8*x-(3/8)+5/4-8 = 0
3*x+8*x-3/8+5/4-8 = 0
11*x-57/8 = 0 // + 57/8
11*x = 57/8 // : 11
x = 57/8/11
x = 57/88
x = 57/88
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