Răspuns :
Răspuns:
a) 3/30-2/30+8/30 = 9/30 = 3/10
b) 28/60-3/60+20/60 = 25/60+20/60 = 45/60 = 9/12 = 3/4
c) 48/108 + 9/108 = 57/108
d) 12/16+2/16 = 14/16 = 7/8
e) 18/10 + 2/10 = 20/10 = 2
Explicație pas cu pas:
Am amplificat la numitor comun
Răspuns:
a) 3/30-2/30+8/30 = 9/30 = 3/10
b) 28/60-3/60+20/60 = 25/60+20/60 = 45/60 = 9/12 = 3/4
c) 48/108 + 9/108 = 57/108
d) 12/16+2/16 = 14/16 = 7/8
e) 18/10 + 2/10 = 20/10 = 2
Explicație pas cu pas:
Am amplificat la numitor comun