11.9=0.7*[x+(x-12)0.6]

Solution for 11.9=0.7*[x+(x-12)0.6] equation:

Simplifying
11.9 = 0.7[x + (x + -12) * 0.6]

Reorder the terms:
11.9 = 0.7[x + (-12 + x) * 0.6]

Reorder the terms for easier multiplication:
11.9 = 0.7[x + 0.6(-12 + x)]
11.9 = 0.7[x + (-12 * 0.6 + x * 0.6)]
11.9 = 0.7[x + (-7.2 + 0.6x)]

Reorder the terms:
11.9 = 0.7[-7.2 + x + 0.6x]

Combine like terms: x + 0.6x = 1.6x
11.9 = 0.7[-7.2 + 1.6x]
11.9 = [-7.2 * 0.7 + 1.6x * 0.7]
11.9 = [-5.04 + 1.12x]

Solving
11.9 = -5.04 + 1.12x

Solving for variable 'x'.

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

Add '-1.12x' to each side of the equation.
11.9 + -1.12x = -5.04 + 1.12x + -1.12x

Combine like terms: 1.12x + -1.12x = 0.00
11.9 + -1.12x = -5.04 + 0.00
11.9 + -1.12x = -5.04

Add '-11.9' to each side of the equation.
11.9 + -11.9 + -1.12x = -5.04 + -11.9

Combine like terms: 11.9 + -11.9 = 0.0
0.0 + -1.12x = -5.04 + -11.9
-1.12x = -5.04 + -11.9

Combine like terms: -5.04 + -11.9 = -16.94
-1.12x = -16.94

Divide each side by '-1.12'.
x = 15.125

Simplifying
x = 15.125