q+42=q*3

Solution for q+42=q*3 equation:

Simplifying
q + 42 = q * 3

Reorder the terms:
42 + q = q * 3

Reorder the terms for easier multiplication:
42 + q = 3q

Solving
42 + q = 3q

Solving for variable 'q'.

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

Add '-3q' to each side of the equation.
42 + q + -3q = 3q + -3q

Combine like terms: q + -3q = -2q
42 + -2q = 3q + -3q

Combine like terms: 3q + -3q = 0
42 + -2q = 0

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

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

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

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

Simplifying
q = 21