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(3*(3*x-9))/2 = (5*(9*x-3))/4 // - (5*(9*x-3))/4
(3*(3*x-9))/2-((5*(9*x-3))/4) = 0
(3*(3*x-9))/2+(-5/4)*(9*x-3) = 0
(3*(3*x-9))/2-5/4*(9*x-3) = 0
(3*(3*x-9))/2+(-5/4*2*(9*x-3))/2 = 0
3*(3*x-9)-5/4*2*(9*x-3) = 0
-27/2*x-39/2 = 0
(-27/2*x-39/2)/2 = 0
(-27/2*x-39/2)/2 = 0 // * 2
-27/2*x-39/2 = 0
-27/2*x-39/2 = 0 // + 39/2
-27/2*x = 39/2 // : -27/2
x = 39/2/(-27/2)
x = -13/9
x = -13/9
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