Răspuns :
[tex]1)a-b=327 \\ a=777 \\ 777-b=327 \\ b=777-327 \\ b=450 \\ a+b=? \\ 777+450=1227 \\ 2)a-b=327 \\ b=777 \\ a-777=327 \\ a=327+777 \\ a=1104 \\ a+b=? \\ 1104+777=1881.[/tex]
a - b = 327
daca a = 777
b = 777 - 327 = 450 atunci a +b = 1227
daca b = 777
a = 777 + 327 = 1104 atunci a+ b = 1104 + 777 = 1881
daca a = 777
b = 777 - 327 = 450 atunci a +b = 1227
daca b = 777
a = 777 + 327 = 1104 atunci a+ b = 1104 + 777 = 1881