The work of a student trying to solve the equation 4(2x − 1) = 11 + 3x + 5 is shown below: Step 1: 4(2x − 1) = 11 + 3x + 5

Question

The work of a student trying to solve the equation 4(2x − 1) = 11 + 3x + 5 is shown below:

Step 1: 4(2x − 1) = 11 + 3x + 5
Step 2: 8x − 4 = 16 + 3x
Step 3: 8x + 3x = 16 − 4
Step 4: 11x = 24
Step 5: x = 2.18

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

Step 2: 8x − 1 = 16 + 3x
Step 2: 8x − 8 = 6 + 3x
Step 3: 8x − 3x = 16 + 4
Step 3: 8x + 3x = 16 − 8

in progress 0
Diễm Thu 5 years 2021-08-13T14:30:11+00:00 1 Answers 21 views 0

Answers ( )

  1. niczorrrr
    1
    2021-08-13T14:31:52+00:00
    Reply

    Answer:

    step 3

    Step-by-step explanation:

    answer is step 3: 8x-3x=16+4

    when your bringing over a plus you make it a minus

    same with the minus bring it over its plus now

    also with times and divide

    time turns to divide

    divide turns to times

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )