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x in (-oo:+oo)
x/3+1/2 = 4*x // - 4*x
x/3-(4*x)+1/2 = 0
x/3-4*x+1/2 = 0
1/2-11/3*x = 0 // - 1/2
-11/3*x = -1/2 // : -11/3
x = -1/2/(-11/3)
x = 3/22
x = 3/22
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