(2a+6)+90+a=180

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Solution for (2a+6)+90+a=180 equation: 



(2a+6)+90+a=180

We move all terms to the left:

(2a+6)+90+a-(180)=0

We add all the numbers together, and all the variables

a+(2a+6)-90=0

We get rid of parentheses

a+2a+6-90=0

We add all the numbers together, and all the variables

3a-84=0

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

3a=84

a=84/3

a=28

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