so 6n-1n = 5n

eg.,2x,3x,5x

2s,6s

6g,9g,etc.

Here,6nand n are like terms .

To simplify the expressions with like terms,all you have to do is simplify them first without considering the varible ,then add it at the end.

The way to solve your problem is:

6n-n

=>6n-1n

So,first solve 6-1,ie,5

then add the variable(here,n) at the end.

So the answer is 5n.

P.S.I tried answering your question without giving you the answer,but I wasn’t successful.

Hope you understand!:)

=6n – 1n = 5n

=6n – n = 5n

=5n

6n = 6n

6-1 = 5

5n

It normally uses letters more like x, y, and z, or, a, b, and c. So, I’m not sure what it means.

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After looking at what the rest have written then I agree that it might be 5n. I may have been looking much deeper than was required. At college we missed out such elementary things and went right onto another level.