8-2=x(3+9)

Solution for 8-2=x(3+9) equation:

Simplifying
8 + -2 = x(3 + 9)

Combine like terms: 8 + -2 = 6
6 = x(3 + 9)

Combine like terms: 3 + 9 = 12
6 = x(12)

Reorder the terms for easier multiplication:
6 = 12x

Solving
6 = 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
6 + -12x = 12x + -12x

Combine like terms: 12x + -12x = 0
6 + -12x = 0

Add '-6' to each side of the equation.
6 + -6 + -12x = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -12x = 0 + -6
-12x = 0 + -6

Combine like terms: 0 + -6 = -6
-12x = -6

Divide each side by '-12'.
x = 0.5

Simplifying
x = 0.5