9.a+17=-1

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Solution for 9.a+17=-1 equation: 



9.a+17=-1

We move all terms to the left:

9.a+17-(-1)=0

We add all the numbers together, and all the variables

9.a+18=0

We move all terms containing a to the left, all other terms to the right

9.a=-18

a=-18/9.

a=-2

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