42-n=n

Solution for 42-n=n equation:

Simplifying
42 + -1n = n

Solving
42 + -1n = 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.
42 + -1n + -1n = n + -1n

Combine like terms: -1n + -1n = -2n
42 + -2n = n + -1n

Combine like terms: n + -1n = 0
42 + -2n = 0

Add '-42' to each side of the equation.
42 + -42 + -2n = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -2n = 0 + -42
-2n = 0 + -42

Combine like terms: 0 + -42 = -42
-2n = -42

Divide each side by '-2'.
n = 21

Simplifying
n = 21