3=-3(1+2n)

Solution for 3=-3(1+2n) equation:

Simplifying
3 = -3(1 + 2n)
3 = (1 * -3 + 2n * -3)
3 = (-3 + -6n)

Solving
3 = -3 + -6n

Solving for variable 'n'.

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

Add '6n' to each side of the equation.
3 + 6n = -3 + -6n + 6n

Combine like terms: -6n + 6n = 0
3 + 6n = -3 + 0
3 + 6n = -3

Add '-3' to each side of the equation.
3 + -3 + 6n = -3 + -3

Combine like terms: 3 + -3 = 0
0 + 6n = -3 + -3
6n = -3 + -3

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

Divide each side by '6'.
n = -1

Simplifying
n = -1