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a fost răspuns

Verifica egalitatile si scrie daca sunt adevarate sau false : a) 876+624:24-1900:100+117=34×68-1000:8:5-120×9-207 ; b) 2100-95×9+80:8-560=75×32+1612:26×13-25×100-11

Răspuns :

Mrapaila
624:24=26 ;1900:100=19 876+26-19+117=. 876+26=902-19=883+117=1000. =>34x68=2312; 1000:8=125:5=25;120x9=1080 2312-25-1080-207=2312-25=2287-1080=1207-207=1000. A. b)95x9=855 ;80:8=10. 2100-855+10-560=. 2100-855=1245+10=1255-560=695. =>75x32=2400; 1612:26=62 ;62x13=806;25x100=2500. 2400+806-2500-11=2400+806=3206-2500=706-11=695. A