- #1
alpuy
- 4
- 0
Homework Statement
I want to demonstrate that the numbers that are multiple of a and b at the same time, are the multiples of ab.
Let a be 2 and b be 3.
In the middle of the proof i get to a point that i have to prove that if 3*k2 is multiple of 2 then k2 is multiple of 2.
Homework Equations
3*k2 is multiple of 2 → k2 is multiple of 2
The Attempt at a Solution
As 3 is not multiple of 2, then k2 has to be multiple of 2. I do not know how to prove it formally.Thanks