180=(a*9)+a

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Solution for 180=(a*9)+a equation: 



180=(a*9)+a

We move all terms to the left:

180-((a*9)+a)=0

We add all the numbers together, and all the variables

-((+a*9)+a)+180=0



We calculate terms in parentheses: -((+a*9)+a), so:

(+a*9)+a

We add all the numbers together, and all the variables

a+(+a*9)

We get rid of parentheses

a+a*9

Wy multiply elements

a+9a

We add all the numbers together, and all the variables

10a

Back to the equation:

-(10a)



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

-10a=-180

a=-180/-10

a=+18

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