13+4a+2a=3a+4

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Solution for 13+4a+2a=3a+4 equation: 



13+4a+2a=3a+4

We move all terms to the left:

13+4a+2a-(3a+4)=0

We add all the numbers together, and all the variables

6a-(3a+4)+13=0

We get rid of parentheses

6a-3a-4+13=0

We add all the numbers together, and all the variables

3a+9=0

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

3a=-9

a=-9/3

a=-3

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