Răspuns:
7.a)7/12-3/12=4/12=1/3
b)17/25-12/25=5/25=1/5
d)8/9-5/9=3/9=1/3
c)45/76-27/76=18=76
e)3/2-1/2=2=2=1
f)49/3-18/3=34/3
g)40/7-19/7=21/7=3
h)47/20-15/20=27/20
Explicație pas cu pas:
baftă...sper ca imi dai tot ce ai zis
