-2d-1=12

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Solution for -2d-1=12 equation:


-2d-1=12

We simplify the equation to the form, which is simple to understand 
-2d-1=12

We move all terms containing d to the left and all other terms to the right. 
-2d=+12+1

We simplify left and right side of the equation. 
-2d=+13

We divide both sides of the equation by -2 to get d. 
d=-6.5

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