-4x-3x-40=-3(2x-20)

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Solution for -4x-3x-40=-3(2x-20) equation: 



-4x-3x-40=-3(2x-20)

We move all terms to the left:

-4x-3x-40-(-3(2x-20))=0

We add all the numbers together, and all the variables

-7x-(-3(2x-20))-40=0



We calculate terms in parentheses: -(-3(2x-20)), so:

-3(2x-20)

We multiply parentheses

-6x+60

Back to the equation:

-(-6x+60)



We get rid of parentheses

-7x+6x-60-40=0

We add all the numbers together, and all the variables

-1x-100=0

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

-x=100

x=100/-1

x=-100

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