=0.4(3d-5)

Solution for =0.4(3d-5) equation:

Simplifying
0 = 0.4(3d + -5)

Reorder the terms:
0 = 0.4(-5 + 3d)
0 = (-5 * 0.4 + 3d * 0.4)
0 = (-2 + 1.2d)

Solving
0 = -2 + 1.2d

Solving for variable 'd'.

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

Add '-1.2d' to each side of the equation.
0 + -1.2d = -2 + 1.2d + -1.2d
Remove the zero:
-1.2d = -2 + 1.2d + -1.2d

Combine like terms: 1.2d + -1.2d = 0.0
-1.2d = -2 + 0.0
-1.2d = -2

Divide each side by '-1.2'.
d = 1.666666667

Simplifying
d = 1.666666667