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a fost răspuns

1.Efectuati: a)4,53×100-2,7×23
b)20-0,47×5
c)57:2,5-0,31×20
Pls ajutati-ma

Răspuns :

Felicityf
a) 453/100*100-27/10*23=453-621/10=(4530-621)/10=3909/10=390,9
b) 20-47/100*5=20-47/20=(400-47)/20=353/20=17.65
c) 57:25/10-31/100*20=57*2/5-31/5=114/5-31/5=16.6

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