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(6*(x+6))/8-(4*x)+2/4 = 0.25 // - 0.25
(6*(x+6))/8-(4*x)+2/4-0.25 = 0
(6*(x+6))/8-4*x+2/4-0.25 = 0
(6*(x+6))/8-4*x+1/2-0.25 = 0
(2*6*(x+6))/(2*8)+(-4*2*8*x)/(2*8)+(1*8)/(2*8)+(-0.25*2*8)/(2*8) = 0
2*6*(x+6)-4*2*8*x+1*8-0.25*2*8 = 0
8-52*x-4+72 = 0
80-52*x-4 = 0
76-52*x = 0
(76-52*x)/(2*8) = 0
(76-52*x)/(2*8) = 0 // * 2*8
76-52*x = 0
76-52*x = 0 // - 76
-52*x = -76 // : -52
x = -76/(-52)
x = 19/13
x = 19/13
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