3(7a+1)=-39+7a

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Solution for 3(7a+1)=-39+7a equation: 



3(7a+1)=-39+7a

We move all terms to the left:

3(7a+1)-(-39+7a)=0

We add all the numbers together, and all the variables

3(7a+1)-(7a-39)=0

We multiply parentheses

21a-(7a-39)+3=0

We get rid of parentheses

21a-7a+39+3=0

We add all the numbers together, and all the variables

14a+42=0

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

14a=-42

a=-42/14

a=-3

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