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(1/4)*(36*x+12)-18 = (-2/3)*(9*x-6) // - (-2/3)*(9*x-6)
(1/4)*(36*x+12)-((-2/3)*(9*x-6))-18 = 0
(1/4)*(36*x+12)+(2/3)*(9*x-6)-18 = 0
1/4*(36*x+12)+2/3*(9*x-6)-18 = 0
1/4*(36*x+12)+2/3*(9*x-6)-18 = 0
15*x-18-1 = 0
15*x-19 = 0
15*x-19 = 0
15*x-19 = 0 // + 19
15*x = 19 // : 15
x = 19/15
x = 19/15
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