100=2(30-10x)

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Solution for 100=2(30-10x) equation: 



100=2(30-10x)

We move all terms to the left:

100-(2(30-10x))=0

We add all the numbers together, and all the variables

-(2(-10x+30))+100=0



We calculate terms in parentheses: -(2(-10x+30)), so:

2(-10x+30)

We multiply parentheses

-20x+60

Back to the equation:

-(-20x+60)



We get rid of parentheses

20x-60+100=0

We add all the numbers together, and all the variables

20x+40=0

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

20x=-40

x=-40/20

x=-2

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