108=d+42

Solution for 108=d+42 equation:

Simplifying
108 = d + 42

Reorder the terms:
108 = 42 + d

Solving
108 = 42 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
108 + -1d = 42 + d + -1d

Combine like terms: d + -1d = 0
108 + -1d = 42 + 0
108 + -1d = 42

Add '-108' to each side of the equation.
108 + -108 + -1d = 42 + -108

Combine like terms: 108 + -108 = 0
0 + -1d = 42 + -108
-1d = 42 + -108

Combine like terms: 42 + -108 = -66
-1d = -66

Divide each side by '-1'.
d = 66

Simplifying
d = 66