84-12=n

Solution for 84-12=n equation:

Simplifying
84 + -12 = n

Combine like terms: 84 + -12 = 72
72 = n

Solving
72 = n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
72 + -1n = n + -1n

Combine like terms: n + -1n = 0
72 + -1n = 0

Add '-72' to each side of the equation.
72 + -72 + -1n = 0 + -72

Combine like terms: 72 + -72 = 0
0 + -1n = 0 + -72
-1n = 0 + -72

Combine like terms: 0 + -72 = -72
-1n = -72

Divide each side by '-1'.
n = 72

Simplifying
n = 72