Răspuns :
a+b=111 a:b=3 rest 15 a=3b +15 si inlocuim in suma 3b+15+b=111 4b=96 a=24 b=111-24=87
a+b=111
a:b=3 r 15
a= 3b+15
b+3b +15=111
4b=111-15
4b=96
b=96:4
b=24
a+24=111
a=111-24
a=87
a:b=3 r 15
a= 3b+15
b+3b +15=111
4b=111-15
4b=96
b=96:4
b=24
a+24=111
a=111-24
a=87