Question

A) 4/9 x 6/5

b) 1/5 / 3/20

c) 1/4 + 5/6

Answer 1

A) 4/9*6/5=4*6/5*9=24/45 = 8/15

b) 1/5 / 3/20 = 1*20/3*5 = 20/15 = 4/3

c) 1/4+5/6 = (3+10)/12 = 13/12

Answer 2

4/9 x 6/5
=(4x6)/(9x5)=24/45=8/15

1/5 / 3/20...producto de extremos entre medios:
=(1x20)/(5x3)=20/15=4/3


1/4 + 5/6....mcm(4;6)=12
=(3x1+2x5)/12=(3+10)/12=13/12