12a-8=11a+13

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Solution for 12a-8=11a+13 equation: 



12a-8=11a+13

We move all terms to the left:

12a-8-(11a+13)=0

We get rid of parentheses

12a-11a-13-8=0

We add all the numbers together, and all the variables

a-21=0

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

a=21

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