-12=-2(d-4)

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Solution for -12=-2(d-4) equation: 



-12=-2(d-4)

We move all terms to the left:

-12-(-2(d-4))=0



We calculate terms in parentheses: -(-2(d-4)), so:

-2(d-4)

We multiply parentheses

-2d+8

Back to the equation:

-(-2d+8)



We get rid of parentheses

2d-8-12=0

We add all the numbers together, and all the variables

2d-20=0

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

2d=20

d=20/2

d=10

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