Răspuns :
= > a = 26b +15
a-b=865 => (26b + 15) - b = 865
25b + 15 = 865 scădem 15
25b = 850
b = 34
a = 26b + 15
a = 34 × 26 + 15
a = 899
= > a = 26b +15
a-b=865 => (26b + 15) - b = 865
25b + 15 = 865 scădem 15
25b = 850
b = 34
a = 26b + 15
a = 34 × 26 + 15
a = 899