D+(-1)=9

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Solution for D+(-1)=9 equation: 


Simplifying
D + (-1) = 9
D + -1 = 9

Reorder the terms:
-1 + D = 9

Solving
-1 + D = 9

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 = 9 + 1

Combine like terms: -1 + 1 = 0
0 + D = 9 + 1
D = 9 + 1

Combine like terms: 9 + 1 = 10
D = 10

Simplifying
D = 10

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