Răspuns :
x+y+z=82
x+x=40
x+y=46
x+z=56
→ 2x=40
→ x=40:2=20
→ y=46-20=26
→ z=56-20=36
sau ...
x |---|---|{40}
y l----l---l{46}
z l-----l---l{56}
40:2=20 (x)
46-20=26 (y)
56-20=36 (z)
x+x=40
x+y=46
x+z=56
→ 2x=40
→ x=40:2=20
→ y=46-20=26
→ z=56-20=36
sau ...
x |---|---|{40}
y l----l---l{46}
z l-----l---l{56}
40:2=20 (x)
46-20=26 (y)
56-20=36 (z)