-2=-2(d-15)

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Solution for -2=-2(d-15) equation: 



-2=-2(d-15)

We move all terms to the left:

-2-(-2(d-15))=0



We calculate terms in parentheses: -(-2(d-15)), so:

-2(d-15)

We multiply parentheses

-2d+30

Back to the equation:

-(-2d+30)



We get rid of parentheses

2d-30-2=0

We add all the numbers together, and all the variables

2d-32=0

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

2d=32

d=32/2

d=16

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