8d-2d+12=42

Solution for 8d-2d+12=42 equation:

Simplifying
8d + -2d + 12 = 42

Reorder the terms:
12 + 8d + -2d = 42

Combine like terms: 8d + -2d = 6d
12 + 6d = 42

Solving
12 + 6d = 42

Solving for variable 'd'.

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

Add '-12' to each side of the equation.
12 + -12 + 6d = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 6d = 42 + -12
6d = 42 + -12

Combine like terms: 42 + -12 = 30
6d = 30

Divide each side by '6'.
d = 5

Simplifying
d = 5