What is the solution of the system? 5x+4y=-2 and x-4y=14

1 Answer
May 21, 2018

(28 1/3, 2 5/6)

Explanation:

We can make the second equation
x=4y+14
Substituting that value into the first equation, we get
5*(4y+14)+4y=-2
24y=68
y=17/6, or 2 5/6
Substituting this value of y into either equation, we solve for x as 85/3, or 28 1/3

This gives us the solution (28 1/3, 2 5/6)