100=((3*85.5)+(7*x))/10

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Solution for 100=((3*85.5)+(7*x))/10 equation: 



100=((3*85.5)+(7x))/10

We move all terms to the left:

100-(((3*85.5)+(7x))/10)=0

We add all the numbers together, and all the variables

-(((256.5)+7x)/10)+100=0

We multiply all the terms by the denominator


-(((256.5)+7x)+100*10)=0



We calculate terms in parentheses: -(((256.5)+7x)+100*10), so:

((256.5)+7x)+100*10

We add all the numbers together, and all the variables

((256.5)+7x)+1000



We calculate terms in parentheses: +((256.5)+7x), so:

(256.5)+7x

determiningTheFunctionDomain
7x+(256.5)

We add all the numbers together, and all the variables

7x+256.5

Back to the equation:

+(7x+256.5)



We get rid of parentheses

7x+256.5+1000

We add all the numbers together, and all the variables

7x+1256.5

Back to the equation:

-(7x+1256.5)



We get rid of parentheses

-7x-1256.5=0

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

-7x=1256.5

x=1256.5/-7

x=-179+2.3333333333333/4.6666666666667

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