-2d+1=-d-9

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Solution for -2d+1=-d-9 equation: 



-2d+1=-d-9

We move all terms to the left:

-2d+1-(-d-9)=0

We add all the numbers together, and all the variables

-2d-(-1d-9)+1=0

We get rid of parentheses

-2d+1d+9+1=0

We add all the numbers together, and all the variables

-1d+10=0

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

-d=-10

d=-10/-1

d=+10

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