3k-4y+2k-(-y)

To simplify the expression 3k - 4y + 2k - (-y), we can combine like terms.

First, we can add the terms with k.

3k + 2k = 5k

Next, we can add the terms with y.

-4y - (-y) = -4y + y = -3y

Putting it all together, the simplified expression is:

5k - 3y