9a+17=-21

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Solution for 9a+17=-21 equation: 



9a+17=-21

We move all terms to the left:

9a+17-(-21)=0

We add all the numbers together, and all the variables

9a+38=0

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

9a=-38

a=-38/9

a=-4+2/9

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