72=5c+7c-2c

Solution for 72=5c+7c-2c equation:

Simplifying
72 = 5c + 7c + -2c

Combine like terms: 5c + 7c = 12c
72 = 12c + -2c

Combine like terms: 12c + -2c = 10c
72 = 10c

Solving
72 = 10c

Solving for variable 'c'.

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

Add '-10c' to each side of the equation.
72 + -10c = 10c + -10c

Combine like terms: 10c + -10c = 0
72 + -10c = 0

Add '-72' to each side of the equation.
72 + -72 + -10c = 0 + -72

Combine like terms: 72 + -72 = 0
0 + -10c = 0 + -72
-10c = 0 + -72

Combine like terms: 0 + -72 = -72
-10c = -72

Divide each side by '-10'.
c = 7.2

Simplifying
c = 7.2