Răspuns :
a,b-nr.
a:b=4 r 17
a=4b+17
a-b=3872
4b+17-b=3872
4b-b=3872-17
3b=3855
b=3855:3
b=1285
a=4b+17
a=4×1285+17
a=5140+17
a=5157
a:b=4 r 17
a=4b+17
a-b=3872
4b+17-b=3872
4b-b=3872-17
3b=3855
b=3855:3
b=1285
a=4b+17
a=4×1285+17
a=5140+17
a=5157
a, b - numerele
a : b = 4 (r) 17 => a = b x 4 + 17
a - b = 3872
inlocuim : b x 4 + 17 - b = 3872
4b - b = 3872- 17
3b = 3855
b = 3855 : 3
b = 1285
a-b = 3872
a - 1285 = 3872
a = 3872+ 1285
a = 5157
a : b = 4 (r) 17 => a = b x 4 + 17
a - b = 3872
inlocuim : b x 4 + 17 - b = 3872
4b - b = 3872- 17
3b = 3855
b = 3855 : 3
b = 1285
a-b = 3872
a - 1285 = 3872
a = 3872+ 1285
a = 5157