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a fost răspuns

a)4/5+2/3·9/4-3/10
b)9/2·1/3-4/3+5/6
c)7/2-1/2:3/4-1/4

Răspuns :

Deva
a)4/5+2/3x9/4-3/10=4/5+18/12-3/10=4x12/60+18x5/60-3x6/60=48+90-18/60=120/60=2
b)9/2x1/3-4/3+5/6=9/6-4/3+5/6=9/6-8/6+5/6=6/6=1
c)7/2-1/2x4/3-1/4=7/2-4/6-1/4=
7x6/12-4x2/12-1x3/12=42-8-3/12=31/12=2,58

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