Simplify 21xyz Over 28yz
21xyz/28yz=[(7yz)(3x)] / [(7yz)(4)]=3x/4Answer: 21xyz/28yz=3x/4
21xyz / 28yzThe yz at the top cancels out the yz at the bottom21x / 287 into 21 is 3, and 7 into 28 is 43x / 4= 3x / 4.I hope this helps.