5/12-4/15=... помогите плиииз.

Question

5/12-4/15=... помогите плиииз.

Answer 1

(5*15-4*12)/(15*12)=75-48/180=27/180=3/20=0,15

Answer 2

50:12=4,1(6)
4:15=0,2(6)
4,1(6)-0,2(6)=3.9

Comments

25/60- 16/60=9/60или 3/20