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Efectuati de la 2 pana la 6 dau coroana

Efectuati De La 2 Pana La 6 Dau Coroana class=
Efectuati De La 2 Pana La 6 Dau Coroana class=

Răspuns :

2.a. 5/12 +3/20=(25+9)/60=34/60=17/30
b. 5/12 -3/20=(25-9)/60=16/60=4/15
c. -5/12 +3/20=(-25+9)/60=-16/60=-4/15
d. -5/12 -3/20=(-25-9)/60=-34/60=-17/30
e. (5/12)/(3/20)=(5/12)*(20/3)=100/36=25/9
f. (-5/12)/(3/20)=(-5/12)*(20/3)=-100/36=-25/9
rs la ex 2

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