105=2a+a+(a+9)

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Solution for 105=2a+a+(a+9) equation: 



105=2a+a+(a+9)

We move all terms to the left:

105-(2a+a+(a+9))=0



We calculate terms in parentheses: -(2a+a+(a+9)), so:

2a+a+(a+9)

We add all the numbers together, and all the variables

3a+(a+9)

We get rid of parentheses

3a+a+9

We add all the numbers together, and all the variables

4a+9

Back to the equation:

-(4a+9)



We get rid of parentheses

-4a-9+105=0

We add all the numbers together, and all the variables

-4a+96=0

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

-4a=-96

a=-96/-4

a=+24

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