Question

The work of a student to solve the equation 2(3x − 4) = 8 + 2x + 4 is shown below:

Step 1: 2(3x − 4) = 8 + 2x + 4
Step 2: 5x − 6 = 12 + 2x
Step 3: 5x − 2x = 12 + 6
Step 4: 3x = 18
Step 5: x = 6

In which step did the student first make an error and what is the correct step?

Step 2; 6x − 6 = 2(6 + x + 2)
Step 2; 6x − 8 = 12 + 2x
Step 3; 5x − 2x = 12 − 6
Step 3; 5x + 2x = 12 + 6

Answer 1

my guess is b.

Answer 2

yea b

Answer 3

seriously?

Answer 4

yea im not dumb

Answer 5

i didn't say you were lol. but thanks.

Answer 6

Its B because they distributed wrong. 2 x -4 is not -6

Answer 7

thank you! :)

Answer 8

no pro

Answer 9

medal @6Emms