D-1.9=-20.4

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Solution for D-1.9=-20.4 equation: 


Simplifying
D + -1.9 = -20.4

Reorder the terms:
-1.9 + D = -20.4

Solving
-1.9 + D = -20.4

Solving for variable 'D'.

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

Add '1.9' to each side of the equation.
-1.9 + 1.9 + D = -20.4 + 1.9

Combine like terms: -1.9 + 1.9 = 0.0
0.0 + D = -20.4 + 1.9
D = -20.4 + 1.9

Combine like terms: -20.4 + 1.9 = -18.5
D = -18.5

Simplifying
D = -18.5

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