100=2x+7(x+4)

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Solution for 100=2x+7(x+4) equation: 



100=2x+7(x+4)

We move all terms to the left:

100-(2x+7(x+4))=0



We calculate terms in parentheses: -(2x+7(x+4)), so:

2x+7(x+4)

We multiply parentheses

2x+7x+28

We add all the numbers together, and all the variables

9x+28

Back to the equation:

-(9x+28)



We get rid of parentheses

-9x-28+100=0

We add all the numbers together, and all the variables

-9x+72=0

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

-9x=-72

x=-72/-9

x=+8

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