12x=-4(-4x-5)=-1

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Solution for 12x=-4(-4x-5)=-1 equation: 



12x=-4(-4x-5)=-1

We move all terms to the left:

12x-(-4(-4x-5))=0



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

-4(-4x-5)

We multiply parentheses

16x+20

Back to the equation:

-(16x+20)



We get rid of parentheses

12x-16x-20=0

We add all the numbers together, and all the variables

-4x-20=0

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

-4x=20

x=20/-4

x=-5

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