Răspuns :
Răspuns:
x=68×7=476
y=476+100=576
z=10(576-476)=10×100=1000
476+576+1000=2052
x=68•7=476
y=476+100=576
z=10(576-476)=10•100=1000
476+576+1000=2052
y=476+100=576
z=10(576-476)=10•100=1000
476+576+1000=2052