Ms. Jones wrote the equation below on the board.

Question

x divided by 42=21

If the equation Ms. Jones wrote is true which of the following equations must be true?

Answers:
a. x=21 divided by 42

b. x=21 x 42

c. x=42 divided by 21

d. x=21 plus 42

I am not sure where to begin on this at all. Can you guide me on what to do?

Thank you

Answer 1

x/42 = 21
The first step is to multiply both sides by 42.
x = 882

Answer 2

I think I just solved it.

I just watched a video on how to do division equations so it would be using inverse multiplication.

x/42=21
x/42x42=21x42
x times 1=882
x=882

To check
882/42=21
21/21=1

Do I have the proper understanding of this somewhat.

Let me ask you one thing though. This video that I just watched. I don't understand why they do
x/42x42 and then get x times 1.

Can you explain this?

Answer 3

I can't explain about all of the problem, but the video did it the same way I did.

Answer 4

Ty Ms. Sue

Answer 5

You're welcome, Matt.