7a-12=2a+13

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Solution for 7a-12=2a+13 equation: 



7a-12=2a+13

We move all terms to the left:

7a-12-(2a+13)=0

We get rid of parentheses

7a-2a-13-12=0

We add all the numbers together, and all the variables

5a-25=0

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

5a=25

a=25/5

a=5

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