(10a+2)+(5a-2)=180

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Solution for (10a+2)+(5a-2)=180 equation: 



(10a+2)+(5a-2)=180

We move all terms to the left:

(10a+2)+(5a-2)-(180)=0

We get rid of parentheses

10a+5a+2-2-180=0

We add all the numbers together, and all the variables

15a-180=0

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

15a=180

a=180/15

a=12

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