-16=a+6a-9

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Solution for -16=a+6a-9 equation: 


a in (-oo:+oo)

-16 = a+6*a-9 // - a+6*a-9

9-a-(6*a)-16 = 0

9-a-6*a-16 = 0

-7*a-7 = 0 // + 7

-7*a = 7 // : -7

a = 7/(-7)

a = -1

a = -1

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