Question

Prove the following inequality

Answer 1

take a look

Answer 2

that is IMO 1984 Problem 1

Answer 3

Is it true?

Answer 4

nice work
@Davidc

Answer 5

but u need an adaptation with this
when a<b and c<d u cant tell a-c<b-d
2<3
1<4
but 2-1>3-4

Answer 6

yes. I have that problem

Answer 7

what about this?

Answer 8

i think there is no problem with that