Is 4m + 2k Equal to 6mk in Algebraic Simplification?

[Rubies]

Homework Statement

3m+2k+m

Relevant Equations

Simplify down

3m+m=4m
4m +2k =6mk
Is this correct,
help please if not correct
Thanks

 

[Gaussian97]

$m$ and $k$ are different algebraic variables, so you can't add them together.

 

[Rubies]

So2k + 4 m

 

[Gaussian97]

Yes, although you can factor out the 2.