Which of the following fractions is not in simplest form? 3/4 7/10 9/12 4/15

9/12
it's simplest form is 3/4

Hey there!

First, let's try simplifying all the fractions. . .

3/4: 3 cannot be divided and equal a whole number (only 4 can) This is in simplest form.

7/10: 7 cannot be divided and equal a whole number (only 10 can) this is in simplest form.

(correct answer) 9/12: 9 divided by 3 = 3 and 12 divided by 3 = 4 so this fraction in simplest form is 3/4.

4/15: 15 cannot be divided and equal a whole number (only the 4 can) this fraction is in simplest form.

Final
9/12

Hope this helps you.
Have a great day!