Oblicz i przedstwa wynik w najprostszej postaci.
a) 3 i4/5 + 2 i 3/5
b) 8 i 11/12 + 7 i 5/12
c) 24 i 13/25 + 15 i 19/25
d) 9 i 16/19 + 8 i 7/19 + 7 i 8/19
e) 3 i 1/5 - 1 i 3/5
f) 8 i 3/8 - 5 i 7/8
g) 25 i 7/12 - 24 i 9/12
h) 16 i 20/27 - 13 i 24/27
Prosze pomóżcie.
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a) 3 i4/5 + 2 i 3/5 = 5 7/5 = 6 2/5
b) 8 i 11/12 + 7 i 5/12 = 15 16/12 = 16 4/12 = 16 1/3
c) 24 i 13/25 + 15 i 19/25 = 39 32/25 = 40 7/25
d) 9 i 16/19 + 8 i 7/19 + 7 i 8/19 = 24 31/19 = 25 12/19
e) 3 i 1/5 - 1 i 3/5 = 2 6/5 - 1 3/5 = 1 3/5
f) 8 i 3/8 - 5 i 7/8 = 7 11/8 - 5 7/8 = 2 4/8 = 2 1/2
g) 25 i 7/12 - 24 i 9/12 = 24 19/12 - 24 9/12 = 10/12 = 5/6
h) 16 i 20/27 - 13 i 24/27 = 15 47/27 - 13 24/27 = 2 23/27