-3(7x-1)=-123

Solution for -3(7x-1)=-123 equation:

Simplifying
-3(7x + -1) = -123

Reorder the terms:
-3(-1 + 7x) = -123
(-1 * -3 + 7x * -3) = -123
(3 + -21x) = -123

Solving
3 + -21x = -123

Solving for variable 'x'.

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

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

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

Combine like terms: -123 + -3 = -126
-21x = -126

Divide each side by '-21'.
x = 6

Simplifying
x = 6