10-9d+d=-9+9(-2d-9)

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Solution for 10-9d+d=-9+9(-2d-9) equation: 



10-9d+d=-9+9(-2d-9)

We move all terms to the left:

10-9d+d-(-9+9(-2d-9))=0

We add all the numbers together, and all the variables

-8d-(-9+9(-2d-9))+10=0



We calculate terms in parentheses: -(-9+9(-2d-9)), so:

-9+9(-2d-9)

determiningTheFunctionDomain
9(-2d-9)-9

We multiply parentheses

-18d-81-9

We add all the numbers together, and all the variables

-18d-90

Back to the equation:

-(-18d-90)



We get rid of parentheses

-8d+18d+90+10=0

We add all the numbers together, and all the variables

10d+100=0

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

10d=-100

d=-100/10

d=-10

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