Answer:
y=-6 and x=0
Step-by-step explanation:
-4x -2y = -12
4x + 8y = -24
(add the equations)
6y = -36
-36/6 = -6
y=-6
(Add y value in any of the equations)
-4x-2(6) = -12
-4x-12=-12
-4x=0
x=0
25 students
50% of 50 is 25
50/2 = 25
