What is the fraction twelve twentieths in its simplest form

3/5 is the simplest form

12/20 can be simplified by factoring out the ones exg

4/8=1/2 because 4/8=1/2 times 4/4 and 4/4=1

so find factors of 12 and 20

12=2 times 2 times 3

20=2 times 2 times 5

there is 2 times 2 that is common to both so

(note: 2*2 means 2 itmes 2)

12/20 = (2*2) / (2*2) times 3/5=1 times 3/5=3/5

the simplest form is 3/5 is your answer