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