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a fost răspuns

Va rog rezolvati-mi aceste exercitii cu / (fractii) am nevoe repede
P.S. dau coroana:
a) 21/20 - 3/8 - 1/5 = ?
b) 7/15 - 1/6 - 1/10 = ?
c) 8/15 - 4/21 - 1/7 = ?

Răspuns :

a)22/20-3/8-1/5=44/40-15/40-8/40=21/40.

b )7/15-1/6-1/10=14/30-5/30-3/30=6/30=3/15


c)8/15-4/21-1/7=56/105-20/105-15/105=15/105=1/7-> se simplifica cu 15.



c
a) 19/40
b) 1/5
C) 1/5