0=4d-(6+d)

Solution for 0=4d-(6+d) equation:

Simplifying
0 = 4d + -1(6 + d)
0 = 4d + (6 * -1 + d * -1)
0 = 4d + (-6 + -1d)

Reorder the terms:
0 = -6 + 4d + -1d

Combine like terms: 4d + -1d = 3d
0 = -6 + 3d

Solving
0 = -6 + 3d

Solving for variable 'd'.

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

Add '-3d' to each side of the equation.
0 + -3d = -6 + 3d + -3d
Remove the zero:
-3d = -6 + 3d + -3d

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

Divide each side by '-3'.
d = 2

Simplifying
d = 2