Răspuns:
1. a) 7/10 - 3/10 =4/10
b)3/5 -2/5=1/5
c)50/100 -15/100=35/100
d)5/7-2/7 =3/7
e)7/9-3/9=4/9
2. a)3/4-2/4=1/4
b)9/10-3/10=6/10
c)7/100-5/100=2/100
d)8/9-6/9=2/9
e)12/10-7/10=5/10
3. a)4
b)2
c)4
d)6
4.a)10/8-3/8=7/8
b)6/3-4/3=2/3
c)19/10-10/10=9/10
d)100/100-90/100=10/100
e)10/7-5/7=5/7
f)20/6-15/6=5/6
5.a)4
b)11
c)3
6.4/9+3/9=7/9 7/9-2/9=5/9
7/9-2/9=5/9 5/9-2/9=3/9
7.a)9/10-3/10=6/10
b)22/10-16/10=6/10
c)50/10-30/10-14/10=6/10
8.(Nu îmi dau seama)
Explicație pas cu pas:
/ = supra
