D-1=-2

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Solution for D-1=-2 equation: 


Simplifying
D + -1 = -2

Reorder the terms:
-1 + D = -2

Solving
-1 + D = -2

Solving for variable 'D'.

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

Add '1' to each side of the equation.
-1 + 1 + D = -2 + 1

Combine like terms: -1 + 1 = 0
0 + D = -2 + 1
D = -2 + 1

Combine like terms: -2 + 1 = -1
D = -1

Simplifying
D = -1

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