(7x+30)=(8x+9)=180

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Solution for (7x+30)=(8x+9)=180 equation: 



(7x+30)=(8x+9)=180

We move all terms to the left:

(7x+30)-((8x+9))=0

We get rid of parentheses

7x-((8x+9))+30=0



We calculate terms in parentheses: -((8x+9)), so:

(8x+9)

We get rid of parentheses

8x+9

Back to the equation:

-(8x+9)



We get rid of parentheses

7x-8x-9+30=0

We add all the numbers together, and all the variables

-1x+21=0

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

-x=-21

x=-21/-1

x=+21

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