3-A=21+5a

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Solution for 3-A=21+5a equation: 



3-=21+5A

We move all terms to the left:

3--(21+5A)=0

We add all the numbers together, and all the variables

-(5A+21)+3-=0

We add all the numbers together, and all the variables

-(5A+21)=0

We get rid of parentheses

-5A-21=0

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

-5A=21

A=21/-5

A=-4+1/5

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