D+3d=20

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Solution for D+3d=20 equation: 


Simplifying
D + 3d = 20

Solving
D + 3d = 20

Solving for variable 'D'.

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

Add '-3d' to each side of the equation.
D + 3d + -3d = 20 + -3d

Combine like terms: 3d + -3d = 0
D + 0 = 20 + -3d
D = 20 + -3d

Simplifying
D = 20 + -3d

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