18+a=-10-a

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Solution for 18+a=-10-a equation: 



18+a=-10-a

We move all terms to the left:

18+a-(-10-a)=0

We add all the numbers together, and all the variables

a-(-1a-10)+18=0

We get rid of parentheses

a+1a+10+18=0

We add all the numbers together, and all the variables

2a+28=0

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

2a=-28

a=-28/2

a=-14

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