b. Compute net operating assets (NOA) for 2018 and 2017 . c. Compute and disaggregate 3M 's RNOA into net operating profit margin (NOPM) and net operating asset turnover (NOAT) for 2018 . Demonstrate that RNOA = NOPM NOAT. d. Compute net nonoperating obligations (NNO) for 2018 and 2017 . Confirm the relation: NOA=NNO+ Total equity e. Compute return on equity (ROE) for 2018 . f. What is the nonoperating return component of ROE for 2018 ? b. Compute net operating assets (NOA) for 2018 and 2017 . c. Compute and disaggregate 3M 's RNOA into net operating profit margin (NOPM) and net operating asset turnover (NOAT) for 2018 . Demonstrate that RNOA = NOPM NOAT. d. Compute net nonoperating obligations (NNO) for 2018 and 2017 . Confirm the relation: NOA=NNO+ Total equity e. Compute return on equity (ROE) for 2018 . f. What is the nonoperating return component of ROE for 2018