Question

What are the steps to figuring out x and y in 3x + 5y = 39.89 and what does x and y equal in the end?

Answer 1

you can pick any value for x or y and then figure the other one out:

x=10:
3(10)+5y=39.89
30+5y=39.89
5y=9.89
y = 1.978

y=-20:
3x+5(-20) = 39.89
3x-100=39.89
3x=139.89
x=46.63