Hitunglah:a. x dan y!b. x + y!Tolong jawaban nya

3x = 5x – 48
3x – 5x = – 48
– 2x = -48
x = 24

2y = 180 – 3x
2y = 180 – 72
2y = 108
y = 54

x + y = 24 + 54
x + y = 78