42=(-2d)+6

Solution for 42=(-2d)+6 equation:

Simplifying
42 = (-2d) + 6

Reorder the terms:
42 = 6 + (-2d)

Solving
42 = 6 + (-2d)

Solving for variable 'd'.

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

Add '(2d)' to each side of the equation.
42 + (2d) = 6 + (-2d) + (2d)

Combine like terms: (-2d) + (2d) = 0
42 + (2d) = 6 + 0
42 + (2d) = 6

Add '-42' to each side of the equation.
42 + -42 + (2d) = 6 + -42

Combine like terms: 42 + -42 = 0
0 + (2d) = 6 + -42
(2d) = 6 + -42

Combine like terms: 6 + -42 = -36
(2d) = -36

Divide each side by '2'.
d = -18

Simplifying
d = -18