The first thing you have to do is figure out by what number both 64 and 100 are divisable. If you want to stay in fractions and not use any decimals then the highest number you can use is 4. both numbers are divisable by 4. 64 divided by 4 is 16 and 100 divided by 4 is 25. Since 100 cannot be reduced any further without turning it into a decimal, 4 is the number you want to use.
16/25ths is the answer you seek.
The lowest term to 64 over 120 in fraction form is 8/15
20/64 = 5/16
24/64 = 3/8
3/8
1/4
1/4
7/8
64 over 192 in lowest terms is 1/3
16/64 = 1/16 so the lowest termis 16
-64/1 Or you could write it as -64 over 1
16/64 = 1/4
Least Common Multiple (LCM) for 64 100 is 1,600