Răspuns:
Explicație pas cu pas:
5
a. 7/9+1/9-5/9=(7+1-5)/9=3/9=1/3
b. 3/4-2/4+5/4=(3-2+5)/4=6/4=3/2
c. 7/10+3/10-6/10=(7+3-6)/10=4/10=2/5
a). 7/9+1/9-5/9=3/9
b). 3/4-2/4+5/4=5/4
c). 7/10+3/10-6/10=4/10
