d-28.8=4.2d

Solution for d-28.8=4.2d equation:

Simplifying
d + -28.8 = 4.2d

Reorder the terms:
-28.8 + d = 4.2d

Solving
-28.8 + d = 4.2d

Solving for variable 'd'.

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

Add '-4.2d' to each side of the equation.
-28.8 + d + -4.2d = 4.2d + -4.2d

Combine like terms: d + -4.2d = -3.2d
-28.8 + -3.2d = 4.2d + -4.2d

Combine like terms: 4.2d + -4.2d = 0.0
-28.8 + -3.2d = 0.0

Add '28.8' to each side of the equation.
-28.8 + 28.8 + -3.2d = 0.0 + 28.8

Combine like terms: -28.8 + 28.8 = 0.0
0.0 + -3.2d = 0.0 + 28.8
-3.2d = 0.0 + 28.8

Combine like terms: 0.0 + 28.8 = 28.8
-3.2d = 28.8

Divide each side by '-3.2'.
d = -9

Simplifying
d = -9