Răspuns:
[(28×5:2×10):5]+[3×(600:5+112:4)-83]=
=[(140:2x10):5]+[3×(120+28)-83]=
=[(70x10):5]+(3×148-83)=
=(700:5)+(444-83)=
=140+361=
=501
[(1737+678):7:5-7×7]:5×148=
=(2415:7:5-49):5×148=
=(345:5-49):5×148=
=(69-49):5×148=
=20:5×148=
=4x148=
=592
[(386+314):10+(195+305):10]:10=
=(700:10+500:10):10=
=(70+50):10=
=120:10=
=12
234:9+[4000-(31+7)×10]:5-219:3=
=26+(4000-38×10):5-73=
=26+(4000-380):5-73=
=26+3620:5-73=
=26+724-73=
=750-73=
=677
Explicație pas cu pas: