38.1k views
0 votes
My kid won't stop telling about how hard his math is. Its getting annoying can you please answer this question for me?

My kid won't stop telling about how hard his math is. Its getting annoying can you-example-1
User Porculus
by
4.1k points

1 Answer

2 votes

Answer:

box on top = 15

box on the bottom = 16

The fractions are not the same

==================================================

Step-by-step explanation:

We multiply the 3 by 5 to get 3*15 = 15

We also multiply the 8 by 2 to get 8*2 = 16

So this is what you could have as your steps


(3)/(8)*(5)/(2) = (3*5)/(8*2) = (15)/(16)

The fractions 3/8 and 15/16 are not the same. We can use a calculator to get these decimal values

3/8 = 0.3750

15/16 = 0.9375

We see that 15/16 is much bigger than 3/8.

----------------

Here's another way to show they aren't the same. For now assume they are equal. We'll show a contradiction happens later.

3/8 = 15/16

3*16 = 8*15

48 = 120

We end up with a contradiction since we get differing values on either side. The false equation at the end means the original equation is false too.

User Oldbam
by
4.2k points