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x in (-oo:+oo)
(-3*x)/4 = -((x+3)/4)-1/2 // + -((x+3)/4)-1/2
(x+3)/4+(-3*x)/4-(-1/2) = 0
(x+3)/4+(-3*x)/4+1/2 = 0
(2*(x+3))/(2*4)+(-3*2*x)/(2*4)+(1*4)/(2*4) = 0
2*(x+3)-3*2*x+1*4 = 0
4-4*x+6 = 0
10-4*x = 0
(10-4*x)/(2*4) = 0
(10-4*x)/(2*4) = 0 // * 2*4
10-4*x = 0
10-4*x = 0 // - 10
-4*x = -10 // : -4
x = -10/(-4)
x = 5/2
x = 5/2
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