Răspuns:
a) 74:2= (40+34):2=(40:2)+(34:2)=20+17=37
65:5=(50+15):5=(50:5)+(15:5)=10+3=13
42:3=(30+12):3=(30:3)+(12:3)=10+4=14
b) 78:6=(60+18):6=(60:6)+(18:6)=10+3=13
91:7=(70+21):7=(70:7)+(21:7)=10+3=13
96:8=(80+16):8=(80:8)+(16:8)=10+2=12
c) 87:3=(30+57):3=(30:3)+(57:3)=10+19=29
92:2=(50+42):2=(50:2)+(42:2)=25+21=46
92:4=(40+52):4=(40:4)+(52:4)=10+13=23
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