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x in (-oo:+oo)
2*x+12/7 = 3*x-1 // - 3*x-1
2*x-(3*x)+12/7+1 = 0
2*x-3*x+12/7+1 = 0
19/7-x = 0 // - 19/7
-x = -19/7 // * -1
x = 19/7
x = 19/7
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