8x-40=-3(4-5x)

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Solution for 8x-40=-3(4-5x) equation: 



8x-40=-3(4-5x)

We move all terms to the left:

8x-40-(-3(4-5x))=0

We add all the numbers together, and all the variables

8x-(-3(-5x+4))-40=0



We calculate terms in parentheses: -(-3(-5x+4)), so:

-3(-5x+4)

We multiply parentheses

15x-12

Back to the equation:

-(15x-12)



We get rid of parentheses

8x-15x+12-40=0

We add all the numbers together, and all the variables

-7x-28=0

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

-7x=28

x=28/-7

x=-4

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