Solution:
16.
Given: 3n+5/7
We can rewrite it as:
3n+5/7 = 3n/7 + 5/7
The sum of two terms is 3n/7 + 5/7.
17.
Given: 9p-6/3
We can rewrite it as:
9p-6/3 = 9p/3 - 6/3
= 3p - 2
The difference of two terms is 3n/7 + 5/7.
18.
Given: Length = -2n+17
Width = 24
Area = length * Width
= (-2n + 17) * 24
= -48n + 408
Hence, the simplest form is -48n + 408.