12x-(8x+6)=42

Solution for 12x-(8x+6)=42 equation:

Simplifying
12x + -1(8x + 6) = 42

Reorder the terms:
12x + -1(6 + 8x) = 42
12x + (6 * -1 + 8x * -1) = 42
12x + (-6 + -8x) = 42

Reorder the terms:
-6 + 12x + -8x = 42

Combine like terms: 12x + -8x = 4x
-6 + 4x = 42

Solving
-6 + 4x = 42

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 4x = 42 + 6

Combine like terms: -6 + 6 = 0
0 + 4x = 42 + 6
4x = 42 + 6

Combine like terms: 42 + 6 = 48
4x = 48

Divide each side by '4'.
x = 12

Simplifying
x = 12