Answer:
3/7
Explanation:
Multiply across, as in multiply the numerators and denominators:
4*3=12
7*4=28
Now you have 12/28, however you need to simplify it, so what is the greatest number that can go into both 12 and 28 (what is the gcf?) It is 4, and 12 divided by 4 is 3 and 28 divided by 4 is 7, so the simplified form is 3/7.