How do you solve the following system?: 9x5y=21,xy=2

1 Answer
Jun 27, 2018

(3114,314)

Explanation:

Let's start with the second equation by dividing every term by 1. We now have the following system:

9x5y=21

x+y=2

Let's subtract x from both sides of the second equation. We get

y=x+2

We can now plug this value into the blue equation. We get

9x5(x+2)=21

Simplifying gives us

9x+5x10=21

14x=31

x=3114

We can plug this into the red equation to get

y=3114+2814

y=314

Therefore, our solutions are

(3114,314)

Hope this helps!