Question

Need help with 49 and please explain

Answer 1

Umm:

Explanation:

So C is correct but the solution wasn't because x and y both don't equal to 1. Here is the way to do it:

We work first on the second equation.

`x + (1)/(y) = 3`

Combine the two terms:

`(xy+1)/(y) = 3`

Since we know

`xy=1`

We can replace it:

`(1+1)/(y) = 3`

We can then solve that y = 2/3.

Then, we can plug this value back into the equation

`xy=1`

and get x = 3/2.

So, 2x + 3y does equal 5 but this is how you get there.

Answer 2

I wrote out the problem and explained step by step next to each part of the problem.