4-a=8+a

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Solution for 4-a=8+a equation: 



4-a=8+a

We move all terms to the left:

4-a-(8+a)=0

We add all the numbers together, and all the variables

-a-(a+8)+4=0

We add all the numbers together, and all the variables

-1a-(a+8)+4=0

We get rid of parentheses

-1a-a-8+4=0

We add all the numbers together, and all the variables

-2a-4=0

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

-2a=4

a=4/-2

a=-2

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