3(4a-9)=81

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Solution for 3(4a-9)=81 equation: 


a in (-oo:+oo)

3*(4*a-9) = 81 // - 81

3*(4*a-9)-81 = 0

3*(4*a-9)-81 = 0

12*a-108 = 0

12*a-108 = 0

12*a-108 = 0 // + 108

12*a = 108 // : 12

a = 108/12

a = 9

a = 9

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