9x+(4.5(30-x)=7.2(30)

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Solution for 9x+(4.5(30-x)=7.2(30) equation: 



9x+(4.5(30-x)=7.2(30)

We move all terms to the left:

9x+(4.5(30-x)-(7.2(30))=0

We add all the numbers together, and all the variables

9x+(4.5(-1x+30)-(7.23)=0



We calculate terms in parentheses: +(4.5(-1x+30)-(7.23), so:

4.5(-1x+30)-(7.23

We add all the numbers together, and all the variables

4.5(-1x+30)

We multiply parentheses

-4.5x+135

Back to the equation:

+(-4.5x+135)



We get rid of parentheses

9x-4.5x+135=0

We add all the numbers together, and all the variables

4.5x+135=0

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

4.5x=-135

x=-135/4.5

x=-30

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