(a+3)+(a-8)+a=55

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Solution for (a+3)+(a-8)+a=55 equation: 



(a+3)+(a-8)+a=55

We move all terms to the left:

(a+3)+(a-8)+a-(55)=0

We add all the numbers together, and all the variables

a+(a+3)+(a-8)-55=0

We get rid of parentheses

a+a+a+3-8-55=0

We add all the numbers together, and all the variables

3a-60=0

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

3a=60

a=60/3

a=20

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