15=-3(x+2)

Solution for 15=-3(x+2) equation:

Simplifying
15 = -3(x + 2)

Reorder the terms:
15 = -3(2 + x)
15 = (2 * -3 + x * -3)
15 = (-6 + -3x)

Solving
15 = -6 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
15 + 3x = -6 + -3x + 3x

Combine like terms: -3x + 3x = 0
15 + 3x = -6 + 0
15 + 3x = -6

Add '-15' to each side of the equation.
15 + -15 + 3x = -6 + -15

Combine like terms: 15 + -15 = 0
0 + 3x = -6 + -15
3x = -6 + -15

Combine like terms: -6 + -15 = -21
3x = -21

Divide each side by '3'.
x = -7

Simplifying
x = -7