5a+(a+30)+(2a+90)=360

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Solution for 5a+(a+30)+(2a+90)=360 equation: 



5a+(a+30)+(2a+90)=360

We move all terms to the left:

5a+(a+30)+(2a+90)-(360)=0

We get rid of parentheses

5a+a+2a+30+90-360=0

We add all the numbers together, and all the variables

8a-240=0

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

8a=240

a=240/8

a=30

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