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x in (-oo:+oo)
2*x+5/7 = 3*x-(17/84) // - 3*x-(17/84)
2*x-(3*x)+5/7+17/84 = 0
2*x-3*x+5/7+17/84 = 0
11/12-x = 0 // - 11/12
-x = -11/12 // * -1
x = 11/12
x = 11/12
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