Răspuns :
a+b =855
b =2a+186
a+ 2a+186 =855
3a =855-186
3a =669
a =223
b =2a+186
b =2*223 +186
b =446+186 =632
verif ; 223+632 =855
b =2a+186
a+ 2a+186 =855
3a =855-186
3a =669
a =223
b =2a+186
b =2*223 +186
b =446+186 =632
verif ; 223+632 =855