-2d-d=-9

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


Simplifying
-2d + -1d = -9

Combine like terms: -2d + -1d = -3d
-3d = -9

Solving
-3d = -9

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Divide each side by '-3'.
d = 3

Simplifying
d = 3

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