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x in (-oo:+oo)
3*x+3/4 = 141/44 // - 141/44
3*x+3/4-(141/44) = 0
3*x+3/4-141/44 = 0
3*x-27/11 = 0 // + 27/11
3*x = 27/11 // : 3
x = 27/11/3
x = 9/11
x = 9/11
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