Okay this is easy, you just got to understand.
You could multiply across or cross multiply, either way you get the same answer.
3. 2 6
- • - =
4. 3. 12
BY multiply you would get 6/12, YOU could simplify this by 6 so the final answer would be 1/2
REMEMBER
step 1: Multiply the top numbers:
Step 2: multiply the bottom numbers.
Step: get your result if it can be simplied then what you get will be your new answer.