mod math problem - confused

[geerant]

Hello,
I have the following problem to solve:

Let a = 67, b = 30, and n = 7

1. Verify and explain that (a-n)≡ (mod b)

I had other homework problems that were very similar and quite simple, but I'm at a loss because there is no number in front of the (mod b).

Thanks in advance for any help!!

 

[HallsofIvy]

Hello,
I have the following problem to solve:

Let a = 67, b = 30, and n = 7

1. Verify and explain that (a-n)≡ (mod b)

I had other homework problems that were very similar and quite simple, but I'm at a loss because there is no number in front of the (mod b).

Thanks in advance for any help!!

The word verify makes no sense here. Either there was supposed to be a number and you were to verify that number or you are to find 67- 7 (mod). In either case, you will have to find 67- 7 (mod 30) won't you ?

(If were me, I might wonder why the problem was not to find a- b (mod n). That's a more interesting problem!)

 

[geerant]

The word verify makes no sense here. Either there was supposed to be a number and you were to verify that number or you are to find 67- 7 (mod). In either case, you will have to find 67- 7 (mod 30) won't you ?

(If were me, I might wonder why the problem was not to find a- b (mod n). That's a more interesting problem!

Thanks, that is along the lines I was thinking. I just wanted to make sure I wasn't missing anything.