Question

comparati rapoartele:a)7supra11 si 8supra11,5

Answer 1

8/11,5 = 80/115=16/23=16*11/23*11=176/253
7/11=7*23/23*11=161/253
Deci 8/11,5 > 7/11

Answer 2

 $\frac{7}{11}$ fata de $\frac{8}{11,5}$
inmultim numerele in cruce
7X11,5 si 11X8
80,5 fata de 88
deci $\frac{7}{11}$≤$\frac{8}{11,5}$