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x in (-oo:+oo)
(-1/2)*(x-3) = (1/3)*(2*x+1) // - (1/3)*(2*x+1)
(-1/2)*(x-3)-((1/3)*(2*x+1)) = 0
(-1/2)*(x-3)+(-1/3)*(2*x+1) = 0
-1/2*(x-3)-1/3*(2*x+1) = 0
-1/2*(x-3)-1/3*(2*x+1) = 0
7/6-7/6*x = 0
7/6-7/6*x = 0
7/6-7/6*x = 0 // - 7/6
-7/6*x = -7/6 // : -7/6
x = -7/6/(-7/6)
x = 1
x = 1
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