After initial recognition, the Right of Use Asset and Lease Liability will not equal. It's also common at initial recognitions for the two balances to differ.

For more on measuring the lease liability and right of use asset at initial recognition, refer here for ASC 842 and here for IFRS 16.

The lease liability and right-of-use asset balances differ because each balance follows very different calculation methodologies when getting to $0.

Deloitte, in their ASC 842 guide, A Roadmap to Applying the New Leasing Standard on p.338, has a great example that articulates this principle:

We’ve also formula linked this calculation, which you can refer to here.

For an in depth analysis of calculating the lease liability and right of use asset refer to the following articles: