[ 1] - 20 Alteran Corporation purchased office equipment for $ 1 . 5 million in 2013 . The Change in equipment is being depreciated over a 10 - year life using the sum - of - the - years' - principle ; digits method . The residual value is expected to be $300 , 000 . At the beginning* change in of 2016 , Alteran decided to change to the straight - line depreciation method for depreciation* this equipment . methods Required :" Prepare the 2016 depreciation adjusting entry