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Dumitresculiliana
a fost răspuns

A)9/4-3/4
B)6/7-1/2
C)3/4+2/5-1/3
D)8/21-1/14

Răspuns :

Dededededede23
a) 9/4-3/4 = 6/4 = 2/3

b) 6/7 - 1/2 = 12/14 - 7/14 = 5/14

c) 3/4+2/5-1/3 = 45/60+24/60-20/60 = 49/60

d) 8/21-1/14 = 16/42-3/42 = 13/42 
Mihaelap
a) 9/4 - 3/4 = 6/4 = 3/2
b) ²⁾6/7 - ⁷⁾1/2 = 12/14 - 7/14 = 5/14
c) ¹⁵⁾3/4 + ¹²⁾2/5 - ²⁰⁾1/3 = 45/60 + 24/60 - 20/60 = 49/60
d) ²⁾8/21 - ³⁾1/14 = 16/42 - 3/42 = 13/42

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