Question

The value of n-3 is how much less than the value of n+3.

A. 3
B. 6
C. n+3
D. n-6
E. n

I don't get what the difference is between B and D?

Answer 1

(n+3)-(n-3)=n+3-n+3=6

Answer 2

answer is B

Answer 3

Yes. But why isn't it D?

Answer 4

Because you can substitute in a number for n to check. What happens when you do that?

Answer 5

Oh it would 6 less than n instead of 3 less in answer B. Thanks for clearing that up.

Answer 6

The terms n are cancelled out as i already proved the solution