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2/3-((3*x)/4) = (1/2)*(2*x-1) // - (1/2)*(2*x-1)
2/3-((1/2)*(2*x-1))-((3*x)/4) = 0
(-1/2)*(2*x-1)+(-3/4)*x+2/3 = 0
(-3*x)/4-1/2*(2*x-1)+2/3 = 0
(-1/2*3*4*(2*x-1))/(3*4)+(-3*3*x)/(3*4)+(2*4)/(3*4) = 0
2*4-1/2*3*4*(2*x-1)-3*3*x = 0
6-21*x+8 = 0
14-21*x = 0
(14-21*x)/(3*4) = 0
(14-21*x)/(3*4) = 0 // * 3*4
14-21*x = 0
14-21*x = 0 // - 14
-21*x = -14 // : -21
x = -14/(-21)
x = 2/3
x = 2/3
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