Odpowiedź:
a) 2/3 + 2/3 = 4/3 = 1 1/3
b) 2/7 + 5/7 = 8/7 = 1 1/7
c) 9/17 + 11/17= 20/17 = 1 3/17
a) 1 1/3 + 1 2/3 = 3 3/3 = 4
b) 2 2/5+ 4 1/5= 6 3/5
c) 5 2/3+ 3 2/3= 8 4/3 = 9 1/3
a) 2 4/17 + 1 6/17= 3 20/17= 4 3/17
b) 4 2/7+ 1 6/7= 5 8/7= 6 1/7
c) 5 2/3+ 2 2/3= 8 4/3= 9 1/3
a) 2 5/10+ 3 2/10+ 3 3/10+ 13 9/10= 21 19/10 =
= 22 9/10
b) 3 1/4+ 4 q/5+ 5 3/5+ 7 3/4= 3 1/4+ 7 3/4+ 4 2/5+ 5 3/5= 10 4/4+ 9 5/5= 11+10= 21
c)3 5/14+4 2/15+ 5 1/14+2 9/15+ 1 415+ 5 8/14=
= 3 5/14+ 5 1/14+ 5 814+ 4 3/15+ 2 9/15+ 4 4/15=
= 13 14/14+ 7 15/15= 14+8=22