7.1=d-(-2.1)

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Solution for 7.1=d-(-2.1) equation: 



7.1=d-(-2.1)

We move all terms to the left:

7.1-(d-(-2.1))=0



We calculate terms in parentheses: -(d-(-2.1)), so:

d-(-2.1)

We add all the numbers together, and all the variables

d+2.1

Back to the equation:

-(d+2.1)



We get rid of parentheses

-d-2.1+7.1=0

We add all the numbers together, and all the variables

-1d+5=0

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

-d=-5

d=-5/-1

d=+5

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