So you get x is equal to, or we could multiply both sides by negative one-fourth either way. Negative one-fourth natural log of three-fourths. And what we need to do is verify that this x, so we used this case right over here. We used that case, but we have to make sure that this x, that we can use this case, that this x is greater than zero. And we might be tempted right when we look at this to say, wait, wait, this looks like a negative number. But we have to remind ourselves that the natural log of three-fourths, since three-fourths is less than e, the natural log of three-fourths is going to be a negative number. It's going to be e to some negative exponent.