a+39=a-39+a

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Solution for a+39=a-39+a equation: 



a+39=a-39+a

We move all terms to the left:

a+39-(a-39+a)=0

We add all the numbers together, and all the variables

a-(2a-39)+39=0

We get rid of parentheses

a-2a+39+39=0

We add all the numbers together, and all the variables

-1a+78=0

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

-a=-78

a=-78/-1

a=+78

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