3(7a+6)+7=130

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Solution for 3(7a+6)+7=130 equation: 



3(7a+6)+7=130

We move all terms to the left:

3(7a+6)+7-(130)=0

We add all the numbers together, and all the variables

3(7a+6)-123=0

We multiply parentheses

21a+18-123=0

We add all the numbers together, and all the variables

21a-105=0

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

21a=105

a=105/21

a=5

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