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(1/2)*x-3 = (2/3)*(x-1) // - (2/3)*(x-1)
(1/2)*x-((2/3)*(x-1))-3 = 0
(-2/3)*(x-1)+(1/2)*x-3 = 0
x/2-2/3*(x-1)-3 = 0
(-2/3*2*(x-1))/2+x/2+(-3*2)/2 = 0
x-2/3*2*(x-1)-3*2 = 0
4/3-1/3*x-6 = 0
-1/3*x-14/3 = 0
(-1/3*x-14/3)/2 = 0
(-1/3*x-14/3)/2 = 0 // * 2
-1/3*x-14/3 = 0
-1/3*x-14/3 = 0 // + 14/3
-1/3*x = 14/3 // : -1/3
x = 14/3/(-1/3)
x = -14
x = -14
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