3(a+5)=2a+21

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Solution for 3(a+5)=2a+21 equation: 



3(a+5)=2a+21

We move all terms to the left:

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

We multiply parentheses

3a-(2a+21)+15=0

We get rid of parentheses

3a-2a-21+15=0

We add all the numbers together, and all the variables

a-6=0

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

a=6

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