9a-4=-7

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Solution for 9a-4=-7 equation: 



9a-4=-7

We move all terms to the left:

9a-4-(-7)=0

We add all the numbers together, and all the variables

9a+3=0

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

9a=-3

a=-3/9

a=-1/3

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