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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