D-3=9

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Solution for D-3=9 equation: 


Simplifying
D + -3 = 9

Reorder the terms:
-3 + D = 9

Solving
-3 + D = 9

Solving for variable 'D'.

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

Add '3' to each side of the equation.
-3 + 3 + D = 9 + 3

Combine like terms: -3 + 3 = 0
0 + D = 9 + 3
D = 9 + 3

Combine like terms: 9 + 3 = 12
D = 12

Simplifying
D = 12

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