I kindly ask of you please do not just copy and paste a previous solution done by another expert. I have posted this question 3 times and all instances I was provided with what was previously done by past experts which is not clear to understand. Thank you kindly.

Ridley Corporation is in the process of adjusting and correcting its books at the end of 2020. In reviewing its records, the following information was discovered. Prepare the journal entries necessary at December 31, 2020, to record the corrections and changes. The books are still open for 2020. The income tax rate is 40%. The company has not yet recorded its 2020 income tax expense and payable amounts so current-year tax effects may be ignored. Prior-year tax effects must be considered in item 4.

1. The company did not accrue sales commissions payable at the end of each of the last 2 years, as follows.

December 31, 2019 $19,000

December 31, 2020 $11,000

2. In reviewing the December 31, 2020, inventory, Ridley discovered errors in its inventory taking procedures that have caused inventories for the last 3 years to be incorrect, as follows.

December 31, 2018 Understated $16,000

December 31, 2019 Understated $19,000

December 31, 2020 Overstated $ 6,700

The company has already made an entry that established the incorrect December 31, 2020, inventory amount.

3. At December 31, 2020, Ridley decided to change the depreciation method on its office equipment from double-declining-balance to straight-line. The equipment had an original cost of $100,000 when purchased on January 1, 2018. It has a 10-year useful life and no residual value. Depreciation expense recorded prior to 2020 under the double-declining balance method was $36,000. The company has already recorded 2020 depreciation expense of $12,800 using the double-declining-balance method.

4. A collection of $5,600 on account from a customer received on December 31, 2020, was not recorded until January 2, 2021.