Answer: C. Step 3
Explanation:
Since we are informed that Ty tried to evaluate the expression step by step. The expression given is:
8x2x3
Step 1: =8x(2x3)
Step 2: =8x6
Step 3: =42
From the above, we can see that both step 1 and step 2 are correct but step 3 is wrong because 8 × 6 isn't equal to 42 but rather 48.
8 × 6 = 48 and not 42.
Therefore Ty's mistake is step 3.