x/x+2x=400-(3x+4x)

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Solution for x/x+2x=400-(3x+4x) equation: 



x/x+2x=400-(3x+4x)

We move all terms to the left:

x/x+2x-(400-(3x+4x))=0



Domain of the equation: x!=0

x∈R



We add all the numbers together, and all the variables

x/x+2x-(400-(+7x))=0

We add all the numbers together, and all the variables

2x+x/x-(400-(+7x))=0

Fractions to decimals

2x-(400-(+7x))+1=0



We calculate terms in parentheses: -(400-(+7x)), so:

400-(+7x)

determiningTheFunctionDomain
-(+7x)+400

We get rid of parentheses

-7x+400

Back to the equation:

-(-7x+400)



We get rid of parentheses

2x+7x-400+1=0

We add all the numbers together, and all the variables

9x-399=0

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

9x=399

x=399/9

x=44+1/3

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