-3(d+1)+3=-18

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Solution for -3(d+1)+3=-18 equation: 



-3(d+1)+3=-18

We move all terms to the left:

-3(d+1)+3-(-18)=0

We add all the numbers together, and all the variables

-3(d+1)+21=0

We multiply parentheses

-3d-3+21=0

We add all the numbers together, and all the variables

-3d+18=0

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

-3d=-18

d=-18/-3

d=+6

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