Can someone explain how to do these?

First question The limit is 69

Second question The limit is 5

Step-by-step explanation:

For the first limit, plug in in the expression , that's the answer for linear equations and limits.

So we have:

The answer is 69

For the second limit, if we do same thing as the first, we will get division by 0. Also indeterminate form, 0 divided by 0. Thus we would think that the limit does not exist. But if we do some algebra, we can easily simplify it and thus plug in the value into the simplified expression to get the correct answer. Shown below:

Now putting 1 in gives us the limit:

So the answer is 5