18=2-2d

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Solution for 18=2-2d equation: 



18=2-2d

We move all terms to the left:

18-(2-2d)=0

We add all the numbers together, and all the variables

-(-2d+2)+18=0

We get rid of parentheses

2d-2+18=0

We add all the numbers together, and all the variables

2d+16=0

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

2d=-16

d=-16/2

d=-8

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