Question

4Efectuați: dau 20 de pucte​

Answer 1

Explicație pas cu pas:

a) 5:10/7=5/1:10/7=5/1•7/10=35/10=3,5

b)4:2/5=4/1:2/5=4/1•5/2=20/2=10

c)9:18/5=9/1:18/5=9/1•5/18=45/18=15/6=5/2

d)9:5 1/4=9/1:21/4=9/1•4/21=36/21=12/7

e)10:7 1/2= 10/1:15/2=10/1•2/15=20/15=4/3

f)14:2 1/3=14/1:7/3=14/1•3/7=42/7=6

g)4/7:3 1/7=4/7:22/7=4/7•7/22=28/154=14/72=7/36

h)5 1/3:3 1/9=16/3:28/9=16/3•9/28=144/84=72/42=12/7

i) 15/14:3=15/14:3/1=15/14•1/3=15/42=5/14

j)8 1/10:6=81/10:6/1=81/10•1/6=81/60=27/20=1,35