180=3a+a+(3a-30)

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Solution for 180=3a+a+(3a-30) equation: 



180=3a+a+(3a-30)

We move all terms to the left:

180-(3a+a+(3a-30))=0



We calculate terms in parentheses: -(3a+a+(3a-30)), so:

3a+a+(3a-30)

We add all the numbers together, and all the variables

4a+(3a-30)

We get rid of parentheses

4a+3a-30

We add all the numbers together, and all the variables

7a-30

Back to the equation:

-(7a-30)



We get rid of parentheses

-7a+30+180=0

We add all the numbers together, and all the variables

-7a+210=0

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

-7a=-210

a=-210/-7

a=+30

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