Answer:
>
Step-by-step explanation:
The bars around the numbers symbolize absolute value. The absolute value of a number is its distance from 0. Since distance is always positive the absolute value is that number but positive. In this case, 7 is greater than 2. So, the answer is 7>2.
It's easier then you'd expect it to be. There's no need to convert the fractions so that they all have a common denominator like you'd have to do when adding or subtracting fractions.
Let's take a look at something really simple.

We can multiply the numerators together so 1*2. We can multiply 4*6 to get the denominator.
This means that our fraction becomes
.
Now I'm assuming since you already know how to add fractions you'll know how to simply fractions. So 2/24 will become 1/12.
Try searching it up on Khan Academy to grasp the topic better!
Answer:
I really don't know look it up
Answer:
729
Step-by-step explanation:
9 x 9 = 81
81 x 9 = 729