Answer:
4
Step-by-step explanation:
combine the ones with the x first: 16/4x+1/4x = 17/4x
combine the ones with the n: -1/5n+1/3n = -3/15n+5/15n = 2/15n
combine: 17/4x+2/15n (17/4 is also equal to 4 1/4)
