-2a-7=9+2a

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Solution for -2a-7=9+2a equation: 



-2a-7=9+2a

We move all terms to the left:

-2a-7-(9+2a)=0

We add all the numbers together, and all the variables

-2a-(2a+9)-7=0

We get rid of parentheses

-2a-2a-9-7=0

We add all the numbers together, and all the variables

-4a-16=0

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

-4a=16

a=16/-4

a=-4

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