5a+9=-4a-18

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Solution for 5a+9=-4a-18 equation: 



5a+9=-4a-18

We move all terms to the left:

5a+9-(-4a-18)=0

We get rid of parentheses

5a+4a+18+9=0

We add all the numbers together, and all the variables

9a+27=0

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

9a=-27

a=-27/9

a=-3

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