-9-2a=9

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Solution for -9-2a=9 equation: 


a in (-oo:+oo)

-(2*a)-9 = 9 // - 9

-(2*a)-9-9 = 0

-2*a-9-9 = 0

-2*a-18 = 0 // + 18

-2*a = 18 // : -2

a = 18/(-2)

a = -9

a = -9

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