39=1+7a

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Solution for 39=1+7a equation: 



39=1+7a

We move all terms to the left:

39-(1+7a)=0

We add all the numbers together, and all the variables

-(7a+1)+39=0

We get rid of parentheses

-7a-1+39=0

We add all the numbers together, and all the variables

-7a+38=0

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

-7a=-38

a=-38/-7

a=5+3/7

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