Question

Hannah is showing her work in simplifying (6.1 − 4.5) − 2.5 + 3.9. Identify any error in her work or reasoning.

Step 1: (6.1 − 4.5) − 2.5 + 3.9
Step 2: 6.1 + (− 4.5 − 2.5) + 3.9 (associative property)
Step 3: 6.1 − 7 + 3.9
Step 4: 6.1 + 3.9 − 7 (distributive property)
Step 5: 10 − 7 = 3 (5 points)
please help

Answer 1

pretty sure she did something wrong in the 1st step, it specifically said to do 6.1-4.5, but she changed the parathenesis, resulting in a different answer