a+3a+(a+65)=180

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Solution for a+3a+(a+65)=180 equation: 



a+3a+(a+65)=180

We move all terms to the left:

a+3a+(a+65)-(180)=0

We add all the numbers together, and all the variables

4a+(a+65)-180=0

We get rid of parentheses

4a+a+65-180=0

We add all the numbers together, and all the variables

5a-115=0

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

5a=115

a=115/5

a=23

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