13-d=-3(d-3)

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Solution for 13-d=-3(d-3) equation: 



13-d=-3(d-3)

We move all terms to the left:

13-d-(-3(d-3))=0

We add all the numbers together, and all the variables

-1d-(-3(d-3))+13=0



We calculate terms in parentheses: -(-3(d-3)), so:

-3(d-3)

We multiply parentheses

-3d+9

Back to the equation:

-(-3d+9)



We get rid of parentheses

-1d+3d-9+13=0

We add all the numbers together, and all the variables

2d+4=0

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

2d=-4

d=-4/2

d=-2

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