ułamki;; 1i1/5 + 2 i2/3= 2i4/9 + 7/18=
3i3/8 + 4i1/10=
a)1i3/15+2 i 10/15=3i13/15b)2i8/19+7/18=2i15/19c)3i15/40+4i4/40=7i19/40
1 i 1/5 + 2 i 2/3 = 1 3/15 + 2 10/15 = 3 13/15
2 i 4/9 + 7/18 = 2 8/18+ 7/18= 2 15/18
3 i 3/8 + 4 i 1/10= 3 15/40 + 4 4/40 = 7 19/40
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a)1i3/15+2 i 10/15=3i13/15
b)2i8/19+7/18=2i15/19
c)3i15/40+4i4/40=7i19/40
1 i 1/5 + 2 i 2/3 = 1 3/15 + 2 10/15 = 3 13/15
2 i 4/9 + 7/18 = 2 8/18+ 7/18= 2 15/18
3 i 3/8 + 4 i 1/10= 3 15/40 + 4 4/40 = 7 19/40
Doprowadzasz do wspólnego mianownika i dodajesz ;)