21x-6=6+9x

Solution for 21x-6=6+9x equation:

Simplifying
21x + -6 = 6 + 9x

Reorder the terms:
-6 + 21x = 6 + 9x

Solving
-6 + 21x = 6 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-6 + 21x + -9x = 6 + 9x + -9x

Combine like terms: 21x + -9x = 12x
-6 + 12x = 6 + 9x + -9x

Combine like terms: 9x + -9x = 0
-6 + 12x = 6 + 0
-6 + 12x = 6

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

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

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

Divide each side by '12'.
x = 1

Simplifying
x = 1