-3a+9=57+a

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Solution for -3a+9=57+a equation: 


a in (-oo:+oo)

9-3*a = a+57 // - a+57

9-3*a-a-57 = 0

-4*a-48 = 0 // + 48

-4*a = 48 // : -4

a = 48/(-4)

a = -12

a = -12

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