3.8=d-3.9

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Solution for 3.8=d-3.9 equation:


Simplifying
3.8 = d + -3.9

Reorder the terms:
3.8 = -3.9 + d

Solving
3.8 = -3.9 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
3.8 + -1d = -3.9 + d + -1d

Combine like terms: d + -1d = 0
3.8 + -1d = -3.9 + 0
3.8 + -1d = -3.9

Add '-3.8' to each side of the equation.
3.8 + -3.8 + -1d = -3.9 + -3.8

Combine like terms: 3.8 + -3.8 = 0.0
0.0 + -1d = -3.9 + -3.8
-1d = -3.9 + -3.8

Combine like terms: -3.9 + -3.8 = -7.7
-1d = -7.7

Divide each side by '-1'.
d = 7.7

Simplifying
d = 7.7

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