=3(d-2)+d

Solution for =3(d-2)+d equation:

Simplifying
0 = 3(d + -2) + d

Reorder the terms:
0 = 3(-2 + d) + d
0 = (-2 * 3 + d * 3) + d
0 = (-6 + 3d) + d

Combine like terms: 3d + d = 4d
0 = -6 + 4d

Solving
0 = -6 + 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
0 + -4d = -6 + 4d + -4d
Remove the zero:
-4d = -6 + 4d + -4d

Combine like terms: 4d + -4d = 0
-4d = -6 + 0
-4d = -6

Divide each side by '-4'.
d = 1.5

Simplifying
d = 1.5