11+9a=-7

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Solution for 11+9a=-7 equation: 



11+9a=-7

We move all terms to the left:

11+9a-(-7)=0

We add all the numbers together, and all the variables

9a+18=0

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

9a=-18

a=-18/9

a=-2

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