(a+a)+(a+a)+(a+a)=30

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Solution for (a+a)+(a+a)+(a+a)=30 equation: 



(a+a)+(a+a)+(a+a)=30

We move all terms to the left:

(a+a)+(a+a)+(a+a)-(30)=0

We add all the numbers together, and all the variables

(+2a)+(+2a)+(+2a)-30=0

We get rid of parentheses

2a+2a+2a-30=0

We add all the numbers together, and all the variables

6a-30=0

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

6a=30

a=30/6

a=5

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