On January 1^st2018, Box Inc. purchased a box-making machine for $300,000. They estimate that the machine has a service life of 7 years, and that the residual value of the machine at the end of its service life is $100,000. Box Inc uses the SYD method of depreciation for this machine.

On Jan 1st 2022, Box Inc revises the estimated total service life of the machine to 9 years, and reduces the estimated residual value to $50,000. Box Inc also changes the depreciation method to straight-line depreciation.

Provide the relevant journal entries on Dec 31^st2018.

Provide the relevant journal entries onDec 31^st2022.