12x-6+4(3x)=90

Solution for 12x-6+4(3x)=90 equation:

Simplifying
12x + -6 + 4(3x) = 90

Remove parenthesis around (3x)
12x + -6 + 4 * 3x = 90

Multiply 4 * 3
12x + -6 + 12x = 90

Reorder the terms:
-6 + 12x + 12x = 90

Combine like terms: 12x + 12x = 24x
-6 + 24x = 90

Solving
-6 + 24x = 90

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 + 24x = 90 + 6

Combine like terms: -6 + 6 = 0
0 + 24x = 90 + 6
24x = 90 + 6

Combine like terms: 90 + 6 = 96
24x = 96

Divide each side by '24'.
x = 4

Simplifying
x = 4