3(x+2)+21=

Solution for 3(x+2)+21= equation:

Simplifying
3(x + 2) + 21 = 0

Reorder the terms:
3(2 + x) + 21 = 0
(2 * 3 + x * 3) + 21 = 0
(6 + 3x) + 21 = 0

Reorder the terms:
6 + 21 + 3x = 0

Combine like terms: 6 + 21 = 27
27 + 3x = 0

Solving
27 + 3x = 0

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + 3x = 0 + -27

Combine like terms: 27 + -27 = 0
0 + 3x = 0 + -27
3x = 0 + -27

Combine like terms: 0 + -27 = -27
3x = -27

Divide each side by '3'.
x = -9

Simplifying
x = -9