12=2(d-7)

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Solution for 12=2(d-7) equation: 



12=2(d-7)

We move all terms to the left:

12-(2(d-7))=0



We calculate terms in parentheses: -(2(d-7)), so:

2(d-7)

We multiply parentheses

2d-14

Back to the equation:

-(2d-14)



We get rid of parentheses

-2d+14+12=0

We add all the numbers together, and all the variables

-2d+26=0

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

-2d=-26

d=-26/-2

d=+13

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