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a fost răspuns

Efectuati si apoi simplificati:
a)52/23-22/23-12/33
b)47/14-9/14-10/14
c)19/44+93/44-24/44
d)64/72+99/72-91/72

Răspuns :

a)52/23-22/23-12/23=
(52-23-12)/23=17/23
b)47/14-9/14-10/14=
(47-9-10)/14=28/14=4/2=2/1=2
c)19/44+93/44-24/44=(19+93-24)/44=
112-24/44=88/44=22/11
d)64/72+99/72-91/72=
(64+99-91)/72=72/72=1/1=1

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