-2a-3=9

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Solution for -2a-3=9 equation: 


a in (-oo:+oo)

-2*a-3 = 9 // - 9

-2*a-9-3 = 0

-2*a-12 = 0 // + 12

-2*a = 12 // : -2

a = 12/(-2)

a = -6

a = -6

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