18-20d=-2d

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Solution for 18-20d=-2d equation:



18-20d=-2d
We move all terms to the left:
18-20d-(-2d)=0
We get rid of parentheses
-20d+2d+18=0
We add all the numbers together, and all the variables
-18d+18=0
We move all terms containing d to the left, all other terms to the right
-18d=-18
d=-18/-18
d=1

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