5a+9+(-2a)=-7

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Solution for 5a+9+(-2a)=-7 equation: 



5a+9+(-2a)=-7

We move all terms to the left:

5a+9+(-2a)-(-7)=0

We add all the numbers together, and all the variables

5a+(-2a)+16=0

We get rid of parentheses

5a-2a+16=0

We add all the numbers together, and all the variables

3a+16=0

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

3a=-16

a=-16/3

a=-5+1/3

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