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(2*x-5)/12 = -x/4-(5/3) // + -x/4-(5/3)
(2*x-5)/12-(-x/4)+5/3 = 0
(2*x-5)/12+(1/4)*x+5/3 = 0
(2*x-5)/12+x/4+5/3 = 0
(3*4*(2*x-5))/(3*4*12)+(3*12*x)/(3*4*12)+(4*5*12)/(3*4*12) = 0
3*4*(2*x-5)+3*12*x+4*5*12 = 0
60*x-60+240 = 0
60*x+180 = 0
(60*x+180)/(3*4*12) = 0
(60*x+180)/(3*4*12) = 0 // * 3*4*12
60*x+180 = 0
60*x+180 = 0 // - 180
60*x = -180 // : 60
x = -180/60
x = -3
x = -3
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