If x minus one over three is equal to k, and k is equal to three, what is the value of x? Okay? So they want us to find this guy right here. And they told us, this guy is three, so just plug in three here and isolate x. So all we're going to get is x minus one over three equal, okay, let's multiply three times case we're going to get three k, then x is going to equal to three k plus one, which we know case three, so that's nine, then plus one, which is just 10.