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: 6.2 + 7.8 − 6 (commutative property)
Step 5: 14 − 6 = 8

Answer 1: He wrote commutative instead of distributive in step 4.
Answer 2: He wrote commutative instead of distributive in step 2.
Answer 3: He wrote commutative instead of associative in step 4.
Answer 4:He wrote commutative instead of associative in step 2.