3d+0.4=-3.9

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Solution for 3d+0.4=-3.9 equation: 


Simplifying
3d + 0.4 = -3.9

Reorder the terms:
0.4 + 3d = -3.9

Solving
0.4 + 3d = -3.9

Solving for variable 'd'.

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

Add '-0.4' to each side of the equation.
0.4 + -0.4 + 3d = -3.9 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 3d = -3.9 + -0.4
3d = -3.9 + -0.4

Combine like terms: -3.9 + -0.4 = -4.3
3d = -4.3

Divide each side by '3'.
d = -1.433333333

Simplifying
d = -1.433333333

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