72=-7d-2d

Solution for 72=-7d-2d equation:

Simplifying
72 = -7d + -2d

Combine like terms: -7d + -2d = -9d
72 = -9d

Solving
72 = -9d

Solving for variable 'd'.

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

Add '9d' to each side of the equation.
72 + 9d = -9d + 9d

Combine like terms: -9d + 9d = 0
72 + 9d = 0

Add '-72' to each side of the equation.
72 + -72 + 9d = 0 + -72

Combine like terms: 72 + -72 = 0
0 + 9d = 0 + -72
9d = 0 + -72

Combine like terms: 0 + -72 = -72
9d = -72

Divide each side by '9'.
d = -8

Simplifying
d = -8