7+3a=12+22

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Solution for 7+3a=12+22 equation: 



7+3a=12+22

We move all terms to the left:

7+3a-(12+22)=0

We add all the numbers together, and all the variables

3a+7-34=0

We add all the numbers together, and all the variables

3a-27=0

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

3a=27

a=27/3

a=9

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