va rogg repde repede!!
![Va Rogg Repde Repede class=](https://ro-static.z-dn.net/files/dee/50ae833d9c1c2e9770b759ac6aa9a0b4.jpg)
x=4k
y=5k
a) 4k+5k/5k=9k/5k=9/5
b) 4k/5k+4k=4k/9k=4/9
c) 5k-4k/4k=k/4k=1/4