8.7=-2.9(d+-6)

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Solution for 8.7=-2.9(d+-6) equation: 



8.7=-2.9(d+-6)

We move all terms to the left:

8.7-(-2.9(d+-6))=0

We add all the numbers together, and all the variables

-(-2.9(d-6))+8.7=0



We calculate terms in parentheses: -(-2.9(d-6)), so:

-2.9(d-6)

We multiply parentheses

-2.9d+17.4

Back to the equation:

-(-2.9d+17.4)



We get rid of parentheses

2.9d-17.4+8.7=0

We add all the numbers together, and all the variables

2.9d-8.7=0

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

2.9d=8.7

d=8.7/2.9

d=3

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