1/8+1/3 , 2/15+5/12 сколько будет скажите и обьясните

1/8 + 1/3 = (1*3)/(8*3) + (1*8)/(3*8) = 3/24 + 8/24 = 11/24,2/15 + 5/12 = (2*4)/(15*4) + (5*5)/(12*5) = 8/60 + 25/60 = 33/60 = 11/20

1/8+1/3=3+8/24=11/242/15+5/12=8+25/60=33/60=11/20