D+20=11

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Solution for D+20=11 equation: 


Simplifying
D + 20 = 11

Reorder the terms:
20 + D = 11

Solving
20 + D = 11

Solving for variable 'D'.

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

Add '-20' to each side of the equation.
20 + -20 + D = 11 + -20

Combine like terms: 20 + -20 = 0
0 + D = 11 + -20
D = 11 + -20

Combine like terms: 11 + -20 = -9
D = -9

Simplifying
D = -9

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