-2a-1=17

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Solution for -2a-1=17 equation: 


a in (-oo:+oo)

-2*a-1 = 17 // - 17

-2*a-17-1 = 0

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

-2*a = 18 // : -2

a = 18/(-2)

a = -9

a = -9

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