Question #807dd

1 Answer
May 31, 2017

y=0

x=4

Explanation:

We can make the y have a coefficient of 10.

These are the new equations:

10x -10y = 40

-15x-10y = -60

Since they have the same sign, -10y, -10y, you subtract the equations from each other.

25x = 100
x = 4

Sub the x value back into one of the original equations to find y.

20 - 5y = 20

y=0