-40-x=-4(x+7)

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Solution for -40-x=-4(x+7) equation: 



-40-x=-4(x+7)

We move all terms to the left:

-40-x-(-4(x+7))=0

We add all the numbers together, and all the variables

-1x-(-4(x+7))-40=0



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

-4(x+7)

We multiply parentheses

-4x-28

Back to the equation:

-(-4x-28)



We get rid of parentheses

-1x+4x+28-40=0

We add all the numbers together, and all the variables

3x-12=0

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

3x=12

x=12/3

x=4

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