4(a+7)=a+91

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Solution for 4(a+7)=a+91 equation: 



4(a+7)=a+91

We move all terms to the left:

4(a+7)-(a+91)=0

We multiply parentheses

4a-(a+91)+28=0

We get rid of parentheses

4a-a-91+28=0

We add all the numbers together, and all the variables

3a-63=0

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

3a=63

a=63/3

a=21

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