-6(2+4d)=21

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Solution for -6(2+4d)=21 equation: 



-6(2+4d)=21

We move all terms to the left:

-6(2+4d)-(21)=0

We add all the numbers together, and all the variables

-6(4d+2)-21=0

We multiply parentheses

-24d-12-21=0

We add all the numbers together, and all the variables

-24d-33=0

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

-24d=33

d=33/-24

d=-1+3/8

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