5a-12=-18-a

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Solution for 5a-12=-18-a equation: 



5a-12=-18-a

We move all terms to the left:

5a-12-(-18-a)=0

We add all the numbers together, and all the variables

5a-(-1a-18)-12=0

We get rid of parentheses

5a+1a+18-12=0

We add all the numbers together, and all the variables

6a+6=0

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

6a=-6

a=-6/6

a=-1

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