7a+3a=12+2a

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Solution for 7a+3a=12+2a equation: 



7a+3a=12+2a

We move all terms to the left:

7a+3a-(12+2a)=0

We add all the numbers together, and all the variables

7a+3a-(2a+12)=0

We add all the numbers together, and all the variables

10a-(2a+12)=0

We get rid of parentheses

10a-2a-12=0

We add all the numbers together, and all the variables

8a-12=0

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

8a=12

a=12/8

a=1+1/2

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