3+a+12=3a+13

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Solution for 3+a+12=3a+13 equation: 



3+a+12=3a+13

We move all terms to the left:

3+a+12-(3a+13)=0

We add all the numbers together, and all the variables

a-(3a+13)+15=0

We get rid of parentheses

a-3a-13+15=0

We add all the numbers together, and all the variables

-2a+2=0

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

-2a=-2

a=-2/-2

a=1

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