9=d-3.4

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Solution for 9=d-3.4 equation: 



9=d-3.4

We move all terms to the left:

9-(d-3.4)=0

We get rid of parentheses

-d+3.4+9=0

We add all the numbers together, and all the variables

-1d+12.4=0

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

-d=-12.4

d=-12.4/-1

d=12+0.4/1

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