402 Digit problems
13.1 When can you cancel illegitimately and yet get the
correct answer?
Letabandbcbe 2-digit numbers. When do such illegimate cancellations
as
ab
bc
=
ab
bc
=
a
c
give correct results in lowest terms?
How about
abc
bcd
=
a
d
,
allowing perhaps further simplifications ofad?