Consider this solution to a problem.

Problem: -4(6 - y) + 4 = -4

Step 1: -24 - 4y + 4 = -4

Step 2: -20 - 4y = -4

Step 3: -4y = 16

Step 4: y = 4

Choose the number of the step where the first mistake was made.

Then, solve the equation correctly.

Problem: -4(6 - y) + 4 = -4

Step 1: -24 - 4y + 4 = -4

Step 2: -20 - 4y = -4

Step 3: -4y = 16

Step 4: y = 4

Choose the number of the step where the first mistake was made.

Then, solve the equation correctly.