686=7(d+64)

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Solution for 686=7(d+64) equation: 



686=7(d+64)

We move all terms to the left:

686-(7(d+64))=0



We calculate terms in parentheses: -(7(d+64)), so:

7(d+64)

We multiply parentheses

7d+448

Back to the equation:

-(7d+448)



We get rid of parentheses

-7d-448+686=0

We add all the numbers together, and all the variables

-7d+238=0

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

-7d=-238

d=-238/-7

d=+34

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