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(1/5)*(3*x+12) = 2*(3-(3*x))+3 // - 2*(3-(3*x))+3
(1/5)*(3*x+12)-(2*(3-(3*x)))-3 = 0
(1/5)*(3*x+12)-2*(3-3*x)-3 = 0
1/5*(3*x+12)-2*(3-3*x)-3 = 0
1/5*(3*x+12)-2*(3-3*x)-3 = 0
33/5*x-18/5-3 = 0
33/5*x-33/5 = 0
33/5*x-33/5 = 0
33/5*x-33/5 = 0 // + 33/5
33/5*x = 33/5 // : 33/5
x = 33/5/33/5
x = 1
x = 1
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