Question

Find the values of x and y 0.50x+0.20y=3.90

Answer 1

Hope this helps.

Good luck mate :P

Answer 2

There are a few different values:

$\left \{ {{y=2, 7, 12, 17 } \atop {x=7, 5, 3, 1}} \right.$

As a warning, I may have formatted this incorrectly, but I hope this helped anyways. A way of writing it that I'm more familiar with would be:

(2, 7), (7, 5), (12, 3), (17, 1)<span />