100=20-(-3x)+(-5x)

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Solution for 100=20-(-3x)+(-5x) equation: 



100=20-(-3x)+(-5x)

We move all terms to the left:

100-(20-(-3x)+(-5x))=0



We calculate terms in parentheses: -(20-(-3x)+(-5x)), so:

20-(-3x)+(-5x)

determiningTheFunctionDomain
-(-3x)+(-5x)+20

We get rid of parentheses

3x-5x+20

We add all the numbers together, and all the variables

-2x+20

Back to the equation:

-(-2x+20)



We get rid of parentheses

2x-20+100=0

We add all the numbers together, and all the variables

2x+80=0

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

2x=-80

x=-80/2

x=-40

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