-7-3(1+8d)=-28

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Solution for -7-3(1+8d)=-28 equation: 



-7-3(1+8d)=-28

We move all terms to the left:

-7-3(1+8d)-(-28)=0

We add all the numbers together, and all the variables

-3(8d+1)-7-(-28)=0

We add all the numbers together, and all the variables

-3(8d+1)+21=0

We multiply parentheses

-24d-3+21=0

We add all the numbers together, and all the variables

-24d+18=0

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

-24d=-18

d=-18/-24

d=3/4

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