6-9d=21-6d

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Solution for 6-9d=21-6d equation:


6-9d=21-6d

We simplify the equation to the form, which is simple to understand 
6-9d=21-6d

We move all terms containing d to the left and all other terms to the right. 
-9d+6d=+21-6

We simplify left and right side of the equation. 
-3d=+15

We divide both sides of the equation by -3 to get d. 
d=-5

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