8=18+2a

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Solution for 8=18+2a equation: 



8=18+2a

We move all terms to the left:

8-(18+2a)=0

We add all the numbers together, and all the variables

-(2a+18)+8=0

We get rid of parentheses

-2a-18+8=0

We add all the numbers together, and all the variables

-2a-10=0

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

-2a=10

a=10/-2

a=-5

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