Question

Can 21/120 be simplified and if yes into what

Answer 1

Yes, you can simplify this.  Find common factors.  In this example, there is a 3 in common.
21/120=(7*3)/(3*40)=7/40
40 is not divisible by 7, so this is our final answer.

Hope this helps!

Answer 2

Yes,because the LCF us 3 so 21\3=7 120/3=40 it 4/6