0.3x +y = 7 represents a linear function
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Answer:
The proof itself
Step-by-step explanation:
We can define the set of all even numbers as
This is, we can define all even numbers as the set of all the multiples of
As for the odd numbers, we can always take every even number and sum one to each one. This is
Note that (the set of all natural numbers adding the zero) so that for
then
Now, given 2 odd numbers and
we can write each one as follows:
And then if we multiply them with each other we obtain:
Then we have that is also an odd number as we defined them.