100=3x-(0.65+20)

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Solution for 100=3x-(0.65+20) equation: 



100=3x-(0.65+20)

We move all terms to the left:

100-(3x-(0.65+20))=0

We add all the numbers together, and all the variables

-(3x-(20.65))+100=0



We calculate terms in parentheses: -(3x-(20.65)), so:

3x-(20.65)

We add all the numbers together, and all the variables

3x-20.65

Back to the equation:

-(3x-20.65)



We get rid of parentheses

-3x+20.65+100=0

We add all the numbers together, and all the variables

-3x+120.65=0

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

-3x=-120.65

x=-120.65/-3

x=40+0.65000000000001/3

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