-12d=-9(12d+20)-12

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Solution for -12d=-9(12d+20)-12 equation: 



-12d=-9(12d+20)-12

We move all terms to the left:

-12d-(-9(12d+20)-12)=0



We calculate terms in parentheses: -(-9(12d+20)-12), so:

-9(12d+20)-12

We multiply parentheses

-108d-180-12

We add all the numbers together, and all the variables

-108d-192

Back to the equation:

-(-108d-192)



We get rid of parentheses

-12d+108d+192=0

We add all the numbers together, and all the variables

96d+192=0

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

96d=-192

d=-192/96

d=-2

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