8+9a=-73

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Solution for 8+9a=-73 equation: 



8+9a=-73

We move all terms to the left:

8+9a-(-73)=0

We add all the numbers together, and all the variables

9a+81=0

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

9a=-81

a=-81/9

a=-9

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