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Catamarius09
a fost răspuns

Calculati:
a) 3supra40+7supra160+33supra320+5supra64+11supra160;
b) 7supra15+1supra20+3supra180+11supra90+5supra60;
c)7supra12+4supra25+15supra24+1supra,48.

Răspuns :

Renatemambouko
3/40+7/160+33/320+5/64+11/160=
(24+14+33+25+22)/320=118/320=59/160

7/15+1/20+3/180+11/90+5/60=
(84+9+3+22+15)/180=133/180

7/12+4/25+15/24+1/48=
(700+192+750+25)/1200=1667/1200