30=(45+30+x)/3

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Solution for 30=(45+30+x)/3 equation: 



30=(45+30+x)/3

We move all terms to the left:

30-((45+30+x)/3)=0

We add all the numbers together, and all the variables

-((x+75)/3)+30=0

We multiply all the terms by the denominator


-((x+75)+30*3)=0



We calculate terms in parentheses: -((x+75)+30*3), so:

(x+75)+30*3

We add all the numbers together, and all the variables

(x+75)+90

We get rid of parentheses

x+75+90

We add all the numbers together, and all the variables

x+165

Back to the equation:

-(x+165)



We get rid of parentheses

-x-165=0

We add all the numbers together, and all the variables

-1x-165=0

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

-x=165

x=165/-1

x=-165

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