7x-4x+6+9x=42

Solution for 7x-4x+6+9x=42 equation:

Simplifying
7x + -4x + 6 + 9x = 42

Reorder the terms:
6 + 7x + -4x + 9x = 42

Combine like terms: 7x + -4x = 3x
6 + 3x + 9x = 42

Combine like terms: 3x + 9x = 12x
6 + 12x = 42

Solving
6 + 12x = 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 + 12x = 42 + -6

Combine like terms: 6 + -6 = 0
0 + 12x = 42 + -6
12x = 42 + -6

Combine like terms: 42 + -6 = 36
12x = 36

Divide each side by '12'.
x = 3

Simplifying
x = 3