3a+4+a=40-2a

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Solution for 3a+4+a=40-2a equation: 



3a+4+a=40-2a

We move all terms to the left:

3a+4+a-(40-2a)=0

We add all the numbers together, and all the variables

3a+a-(-2a+40)+4=0

We add all the numbers together, and all the variables

4a-(-2a+40)+4=0

We get rid of parentheses

4a+2a-40+4=0

We add all the numbers together, and all the variables

6a-36=0

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

6a=36

a=36/6

a=6

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