9a-7=-70

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Solution for 9a-7=-70 equation: 



9a-7=-70

We move all terms to the left:

9a-7-(-70)=0

We add all the numbers together, and all the variables

9a+63=0

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

9a=-63

a=-63/9

a=-7

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