Question

If a > 0 and b < 0, then |a|-|b|=
​

Answer 1

Answer:

hope it will help you....✌️✌️

Answer 2

Answer:

I have to prove that:

If a>0, then b<0⟹ab<0.

And I have:

a,b>0⟹ab>0(7')

I wrote:

As a>0 and ab<0 then b<0, otherwise this would contradict 7′.

Step-by-step explanation: