The expression 4[7+(w+5)] is manipulated to generate an equivalent expression. In which step, if any, does the first error occur?

Question

The expression 4[7+(w+5)] is manipulated to generate an equivalent expression. In which step, if any, does the first error occur?

4[7+(w+5)]
Step 1: 4[w+(7+5)] Apply the Associative Property of Addition and add.
Step 2: 4[w+12]
Step 3: 4⋅w+12 Apply the Distributive Property.

Step 2
no error
Step 1
Step 3

Answer 1

The expression 4[7+(w+5)] is manipulated to generate an equivalent expression. In which step, if any, does the first error occur?

The first error occurs in Step 1: 4[w+(7+5)].