9-a=1/3(9a-18)

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Solution for 9-a=1/3(9a-18) equation: 


a in (-oo:+oo)

9-a = (1/3)*(9*a-18) // - (1/3)*(9*a-18)

9-((1/3)*(9*a-18))-a = 0

(-1/3)*(9*a-18)-a+9 = 0

9-1/3*(9*a-18)-a = 0

9-1/3*(9*a-18)-a = 0

6-4*a+9 = 0

15-4*a = 0

15-4*a = 0

15-4*a = 0 // - 15

-4*a = -15 // : -4

a = -15/(-4)

a = 15/4

a = 15/4

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