(q-7)*3=123

Solution for (q-7)*3=123 equation:

Simplifying
(q + -7) * 3 = 123

Reorder the terms:
(-7 + q) * 3 = 123

Reorder the terms for easier multiplication:
3(-7 + q) = 123
(-7 * 3 + q * 3) = 123
(-21 + 3q) = 123

Solving
-21 + 3q = 123

Solving for variable 'q'.

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

Add '21' to each side of the equation.
-21 + 21 + 3q = 123 + 21

Combine like terms: -21 + 21 = 0
0 + 3q = 123 + 21
3q = 123 + 21

Combine like terms: 123 + 21 = 144
3q = 144

Divide each side by '3'.
q = 48

Simplifying
q = 48