7(2a+3)+21=100+4

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Solution for 7(2a+3)+21=100+4 equation: 



7(2a+3)+21=100+4

We move all terms to the left:

7(2a+3)+21-(100+4)=0

We add all the numbers together, and all the variables

7(2a+3)+21-104=0

We add all the numbers together, and all the variables

7(2a+3)-83=0

We multiply parentheses

14a+21-83=0

We add all the numbers together, and all the variables

14a-62=0

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

14a=62

a=62/14

a=4+3/7

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