3D+7=4

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Solution for 3D+7=4 equation: 


Simplifying
3D + 7 = 4

Reorder the terms:
7 + 3D = 4

Solving
7 + 3D = 4

Solving for variable 'D'.

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

Add '-7' to each side of the equation.
7 + -7 + 3D = 4 + -7

Combine like terms: 7 + -7 = 0
0 + 3D = 4 + -7
3D = 4 + -7

Combine like terms: 4 + -7 = -3
3D = -3

Divide each side by '3'.
D = -1

Simplifying
D = -1

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