D+6=-15

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Solution for D+6=-15 equation: 


Simplifying
D + 6 = -15

Reorder the terms:
6 + D = -15

Solving
6 + D = -15

Solving for variable 'D'.

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

Add '-6' to each side of the equation.
6 + -6 + D = -15 + -6

Combine like terms: 6 + -6 = 0
0 + D = -15 + -6
D = -15 + -6

Combine like terms: -15 + -6 = -21
D = -21

Simplifying
D = -21

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