-21.5-6.5d=4.5(4d+6)

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Solution for -21.5-6.5d=4.5(4d+6) equation: 



-21.5-6.5d=4.5(4d+6)

We move all terms to the left:

-21.5-6.5d-(4.5(4d+6))=0



We calculate terms in parentheses: -(4.5(4d+6)), so:

4.5(4d+6)

We multiply parentheses

18d+27

Back to the equation:

-(18d+27)



We get rid of parentheses

-6.5d-18d-27-21.5=0

We add all the numbers together, and all the variables

-24.5d-48.5=0

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

-24.5d=48.5

d=48.5/-24.5

d=-1+1/1.0208333333333

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