Answer:
x=4 y=5
Explanation:
5x + 2y = 30 and -5x + 4y = 0
Solve by adding the two equations together to eliminate x
5x + 2y = 30
-5x + 4y = 0
----------------------
6y = 30
Divide each side by 6
6y/6 = 30/6
y =5
Now we solve for x
5x + 2y = 30
5x +2(5) = 30
5x+10 = 30
Subtract 10 from each side
5x+10-10 = 30-10
5x = 20
Divide each side by 5
5x/5 = 20/5
x = 4