-3(1+3n)-3=-42

Solution for -3(1+3n)-3=-42 equation:

Simplifying
-3(1 + 3n) + -3 = -42
(1 * -3 + 3n * -3) + -3 = -42
(-3 + -9n) + -3 = -42

Reorder the terms:
-3 + -3 + -9n = -42

Combine like terms: -3 + -3 = -6
-6 + -9n = -42

Solving
-6 + -9n = -42

Solving for variable 'n'.

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

Add '6' to each side of the equation.
-6 + 6 + -9n = -42 + 6

Combine like terms: -6 + 6 = 0
0 + -9n = -42 + 6
-9n = -42 + 6

Combine like terms: -42 + 6 = -36
-9n = -36

Divide each side by '-9'.
n = 4

Simplifying
n = 4