10a-27=4a-21

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Solution for 10a-27=4a-21 equation: 



10a-27=4a-21

We move all terms to the left:

10a-27-(4a-21)=0

We get rid of parentheses

10a-4a+21-27=0

We add all the numbers together, and all the variables

6a-6=0

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

6a=6

a=6/6

a=1

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