Răspuns :
a:b=6 rest 1⇒a= 6b+1
a-b=416
6b+1-b=416
5b+1=416
5b=416-1
5b=415
b=415:5
b=83
a=6*83+1
a=498+1
a=499
a-b=416
6b+1-b=416
5b+1=416
5b=416-1
5b=415
b=415:5
b=83
a=6*83+1
a=498+1
a=499