2d+9=-11

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Solution for 2d+9=-11 equation: 



2d+9=-11

We move all terms to the left:

2d+9-(-11)=0

We add all the numbers together, and all the variables

2d+20=0

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

2d=-20

d=-20/2

d=-10

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