Answer:
24. 307
26.

Explanation:
In order to evaluate, we need to substitute the given value in the given expression.
In this case:
Given expression: n + (-5)
For 24.
when n = 312
Substituting value in above expression, we get
312 +(-5) = 312- 5 = 307
Note:
When we multiply positive and negative sigh then it will be negative sigh.
Therefore, the answer is 307.
Similarly:
For 26.
When

Substituting value in above expression, we get

Simplify it:


Therefore, answer is:
