Shelley tried to evaluate an expression. Here is her work:

Question

2(3)3–(8+92)
=
2(3)3–8+18 Step 1
=
2(27)–8+18 Step 2
=
54–8+18 Step 3
=
46+18 Step 4
=
64 Step 5

Answer 1

Shelley's work is incorrect in Step 2. The parentheses around the expression (8+92) indicate that the addition should be performed before proceeding with the multiplication. Therefore, Step 2 should have been:

2(3)3-100

Then, simplifying the expression further:

2(27)-100

54-100

-46