x | = | 6 |

| |

2 | 3 |

Cross multiply:
x * 3 = 2 * 6
Simplifying
x * 3 = 2 * 6
Reorder the terms for easier multiplication:
3x = 2 * 6
Multiply 2 * 6
3x = 12
Solving
3x = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '3'.
x = 4
Simplifying
x = 4