3=d+0.9

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Solution for 3=d+0.9 equation: 



3=d+0.9

We move all terms to the left:

3-(d+0.9)=0

We get rid of parentheses

-d-0.9+3=0

We add all the numbers together, and all the variables

-1d+2.1=0

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

-d=-2.1

d=-2.1/-1

d=2+0.1/1

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