-3-3a=-39

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Solution for -3-3a=-39 equation: 



-3-3a=-39

We move all terms to the left:

-3-3a-(-39)=0

We add all the numbers together, and all the variables

-3a+36=0

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

-3a=-36

a=-36/-3

a=+12

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