42=-6d

Solution for 42=-6d equation:

Simplifying
42 = -6d

Solving
42 = -6d

Solving for variable 'd'.

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

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

Combine like terms: -6d + 6d = 0
42 + 6d = 0

Add '-42' to each side of the equation.
42 + -42 + 6d = 0 + -42

Combine like terms: 42 + -42 = 0
0 + 6d = 0 + -42
6d = 0 + -42

Combine like terms: 0 + -42 = -42
6d = -42

Divide each side by '6'.
d = -7

Simplifying
d = -7