Matt is showing his work in simplifying (6.2 − 1.6) − 4.4 + 7.8. identify any error in his work or reasoning. step 1: (6.2 − 1.6) − 4.4 + 7.8 step 2: 6.2 + (− 1.6 − 4.4) + 7.8 (commutative property) step 3: 6.2 − 6 + 7.8 step 4: −14 − 6 = 8 (commutative property) step 5: 14 − 6 = 8