- #1

junglebobo

- 7

- 0

How do I go forward with this?

This is what I've done so far:

suppose a|b and a|b+c

then b = an for some integer n

and c = am for some integer m

∴ b+c = an+am

= a(n+m)

= ak for some integer k

but I don't feel like this is getting me anywhere