72=7t-15t

Solution for 72=7t-15t equation:

Simplifying
72 = 7t + -15t

Combine like terms: 7t + -15t = -8t
72 = -8t

Solving
72 = -8t

Solving for variable 't'.

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

Add '8t' to each side of the equation.
72 + 8t = -8t + 8t

Combine like terms: -8t + 8t = 0
72 + 8t = 0

Add '-72' to each side of the equation.
72 + -72 + 8t = 0 + -72

Combine like terms: 72 + -72 = 0
0 + 8t = 0 + -72
8t = 0 + -72

Combine like terms: 0 + -72 = -72
8t = -72

Divide each side by '8'.
t = -9

Simplifying
t = -9