Answer:
X=-4, y=-4
Step-by-step explanation:
You have to multiply the second equation by 3 so you can eliminate y.
3(-9x+3y)=3(24)
-27x+9y=72
now you can add the two equations
First equation. 5x-9y=16
Modified 2nd equation -27x+9y=72
add together -22x+0=88
solve for x X=-4
solve for y
5x-9y=16
5(-4)-9y=16
-20-9y=16
-9y=36
y=-4
check answer by substituting x and y value into either equation
5x-9y=16
5(-4)-9(-4)=16
-20+36=16
16=16
