3(3c-1)=-42

Solution for 3(3c-1)=-42 equation:

Simplifying
3(3c + -1) = -42

Reorder the terms:
3(-1 + 3c) = -42
(-1 * 3 + 3c * 3) = -42
(-3 + 9c) = -42

Solving
-3 + 9c = -42

Solving for variable 'c'.

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

Add '3' to each side of the equation.
-3 + 3 + 9c = -42 + 3

Combine like terms: -3 + 3 = 0
0 + 9c = -42 + 3
9c = -42 + 3

Combine like terms: -42 + 3 = -39
9c = -39

Divide each side by '9'.
c = -4.333333333

Simplifying
c = -4.333333333