Ayesha has a theory about 2 digit numbers that have a larger tens digit than ones digit she says that reversing the digits and s

Question

3 years ago

6

Ayesha has a theory about 2 digit numbers that have a larger tens digit than ones digit she says that reversing the digits and s

ubtracting the reversed number from the original number will always generate a number that is a multiple of 9 is ayesha right? If so why do you think this works? If not,why not?

Mathematics

1 answer:

natta225 [31] · Answer 1 · 2022-06-15T21:23:04+03:00

natta225 [31]3 years ago

5 0

$10x+y-(10y+x)=10x+y-10y-x=9x-9y=9(x-y)$

She's right.