4=-3a+18+a

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Solution for 4=-3a+18+a equation: 



4=-3a+18+a

We move all terms to the left:

4-(-3a+18+a)=0

We add all the numbers together, and all the variables

-(-2a+18)+4=0

We get rid of parentheses

2a-18+4=0

We add all the numbers together, and all the variables

2a-14=0

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

2a=14

a=14/2

a=7

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