3a-21+5a=2a+24+a

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Solution for 3a-21+5a=2a+24+a equation: 



3a-21+5a=2a+24+a

We move all terms to the left:

3a-21+5a-(2a+24+a)=0

We add all the numbers together, and all the variables

3a+5a-(3a+24)-21=0

We add all the numbers together, and all the variables

8a-(3a+24)-21=0

We get rid of parentheses

8a-3a-24-21=0

We add all the numbers together, and all the variables

5a-45=0

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

5a=45

a=45/5

a=9

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