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x in (-oo:+oo)
6*x+1/3 = -143/3 // + -143/3
6*x+1/3-(-143/3) = 0
6*x+1/3+143/3 = 0
6*x+48 = 0 // - 48
6*x = -48 // : 6
x = -48/6
x = -8
x = -8
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