3D-9=4

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Solution for 3D-9=4 equation: 


Simplifying
3D + -9 = 4

Reorder the terms:
-9 + 3D = 4

Solving
-9 + 3D = 4

Solving for variable 'D'.

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

Add '9' to each side of the equation.
-9 + 9 + 3D = 4 + 9

Combine like terms: -9 + 9 = 0
0 + 3D = 4 + 9
3D = 4 + 9

Combine like terms: 4 + 9 = 13
3D = 13

Divide each side by '3'.
D = 4.333333333

Simplifying
D = 4.333333333

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