Question

The table shows the solution to the equation |2x − 4| − 3 = 3:

Step 1:|2x − 4| = −3 + 3
Step 2:|2x − 4| = 0
Step 3:2x − 4 = 0
Step 4:2x = 4
Step 5:x = 2


Which is the first incorrect step?

A.Step 1
B.Step 2
C.Step 3
D.Solution is correct

Answer 1

The correct answer is:

A.Step 1

Step-by-step explanation:

The first step to solving this equation would be to cancel the 3, since it is outside the absolute value bars. To cancel subtraction, we would add; this would give us

|2x-4| = 3+3

Instead, we had |2x-4| = -3+3

Thus the first step is incorrect.

Answer 2

Step 1 is incorrect.  should have added the three to the other side.