Răspuns :
a-b = 18
a = 3b + 2
3b+2-b = 18 => 2b = 18-2 => b = 16: 2 => b = 8
a = b + 18 = 8+18 => a = 26
26-8 = 18 ; 26:8 = 3 rest 2 ; corect.
a-b = 18
a = 3b + 2
3b+2-b = 18 => 2b = 18-2 => b = 16: 2 => b = 8
a = b + 18 = 8+18 => a = 26
26-8 = 18 ; 26:8 = 3 rest 2 ; corect.