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(10-(4*x))/6+(12-(6*x))/2 = 12 // - 12
(10-(4*x))/6+(12-(6*x))/2-12 = 0
(10-4*x)/6+(12-6*x)/2-12 = 0
(2*(10-4*x))/(2*6)+(6*(12-6*x))/(2*6)+(-12*2*6)/(2*6) = 0
2*(10-4*x)+6*(12-6*x)-12*2*6 = 0
92-44*x-144 = 0
-44*x-52 = 0
(-44*x-52)/(2*6) = 0
(-44*x-52)/(2*6) = 0 // * 2*6
-44*x-52 = 0
-44*x-52 = 0 // + 52
-44*x = 52 // : -44
x = 52/(-44)
x = -13/11
x = -13/11
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