-6.9d-3.91=-9.85-8.7d

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Solution for -6.9d-3.91=-9.85-8.7d equation: 



-6.9d-3.91=-9.85-8.7d

We move all terms to the left:

-6.9d-3.91-(-9.85-8.7d)=0

We add all the numbers together, and all the variables

-6.9d-(-8.7d-9.85)-3.91=0

We get rid of parentheses

-6.9d+8.7d+9.85-3.91=0

We add all the numbers together, and all the variables

1.8d+5.94=0

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

1.8d=-5.94

d=-5.94/1.8

d=-3+0.54/1.8

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