Tom is showing his work in simplifying (5.2 – 8.5) – 0.5 + 6.8. In which step did Tom make an error?
Step 1:: (5.2 – 8.5) – 0.5 + 6.8
Step 2: 5.2 + (–8.5 – 0.5) + 6.8 (distributive property)
Step 3: 5.2 – 9 + 6.8
Step 4: 5.2 + 6.8 – 9 (commutative property)
Step 5: 12 – 9 = 3
Step 2; he wrote distributive instead of commutative
Step 2; he wrote distributive instead of associative
Step 4; he wrote commutative instead of associative
Step 4; he wrote commutative instead of distributive

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