Răspuns :
a-b=122
a=b*11+2
inlocuim a doua egalitate in prima
11*b+2-b=122
10*b+2=122
10*b=120
b=120/10
b=12
a=122-12
a=110
a-b=122
a:b=11 rest 2=> a=11xb + 2
11xb+2-b=122
10xb=122-2
10xb=120 => b= 12
a= 11x12+2
a=134
a:b=11 rest 2=> a=11xb + 2
11xb+2-b=122
10xb=122-2
10xb=120 => b= 12
a= 11x12+2
a=134