6
 = 
x
1
2

Cross multiply:
6 * 2 = 1 * x

Simplifying
6 * 2 = 1 * x

Multiply 6 * 2
12 = 1 * x

Solving
12 = 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
12 + -1x = 1x + -1x

Combine like terms: 1x + -1x = 0
12 + -1x = 0

Add '-12' to each side of the equation.
12 + -12 + -1x = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 0 + -12
-1x = 0 + -12

Combine like terms: 0 + -12 = -12
-1x = -12

Divide each side by '-1'.
x = 12

Simplifying
x = 12