100=300-(100+x)

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Solution for 100=300-(100+x) equation: 



100=300-(100+x)

We move all terms to the left:

100-(300-(100+x))=0

We add all the numbers together, and all the variables

-(300-(x+100))+100=0



We calculate terms in parentheses: -(300-(x+100)), so:

300-(x+100)

determiningTheFunctionDomain
-(x+100)+300

We get rid of parentheses

-x-100+300

We add all the numbers together, and all the variables

-1x+200

Back to the equation:

-(-1x+200)



We get rid of parentheses

1x-200+100=0

We add all the numbers together, and all the variables

x-100=0

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

x=100

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