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x in (-oo:+oo)
-5/12 = x+1/3 // - x+1/3
-x-5/12-(1/3) = 0
-x-5/12-1/3 = 0
-x-3/4 = 0 // + 3/4
-x = 3/4 // * -1
x = -3/4
x = -3/4
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