7(2a+4)-1=13+7a

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Solution for 7(2a+4)-1=13+7a equation: 



7(2a+4)-1=13+7a

We move all terms to the left:

7(2a+4)-1-(13+7a)=0

We add all the numbers together, and all the variables

7(2a+4)-(7a+13)-1=0

We multiply parentheses

14a-(7a+13)+28-1=0

We get rid of parentheses

14a-7a-13+28-1=0

We add all the numbers together, and all the variables

7a+14=0

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

7a=-14

a=-14/7

a=-2

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