Ask Question
MathematicsMathematics
20 January, 17:43

The work of a student to solve the equation 2 (4x - 4) = 8 + 4x + 4 is shown below: Step 1. 2 (4x - 4) = 8 + 4x + 4 Step 2. 6x - 6 = 12 + 4x Step 3. 6x - 4x = 12 + 6 Step 4. 2x = 18 Step 5. x = 9 In which step did the student first make an error and what is the correct step? Step 2, 8x - 6 = 2 (6 + 2x + 2) Step 2, 8x - 8 = 12 + 4x Step 3, 6x - 4x = 12 - 6 Step 3, 6x + 4x = 12 + 6

+1
Answers (1)
  1. 20 January, 18:08
    0
    Answer is step 2, 8x - 8 = 12 + 4x

    The student did not distribute the 2 into the parentheses properly which ruined their entire problem. With 2 (4x-4), you must multiply everything in parentheses by 2.

    so 2 x 4x = 8x

    2 x - 4 = - 8

    making it 8x - 8 = 12 + 4x (on the right side all you did was combine like terms)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The work of a student to solve the equation 2 (4x - 4) = 8 + 4x + 4 is shown below: Step 1. 2 (4x - 4) = 8 + 4x + 4 Step 2. 6x - 6 = 12 + ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What are the different types of light
Answers (1)
Solve and check the following linear equation. 5x - (2x-8) = 26
Answers (1)
Mr. Shultz paid a total of $1500 to stay in a hotel and park his car for 6 nights. Each night, the hotel charged Mr. Shultz h dollars for a room and $50 for parking. How much was Mr. Shultz charged for a room for one night?
Answers (1)
A standard deck of cards contains 13 of each suit: red hearts, red diamonds, black clubs, and black spades. What is the probability of drawing a red card without looking?
Answers (1)
Create a word problem for 2x+10=30
Answers (1)
New Questions in Mathematics
9x²+5x - 3x²+x?' Ayuda!
Answers (2)
Sharon paid a total of $25.52, which included sales tax on all the items. What tax rate did Sharon pay? Round the answer to the nearest percent.
Answers (1)
Anya grandfather gives her a collection of souvenir subway tokens. he gives her 9 tokens from the 1980s. she wants to make a display of each type of token. she wants all three displays to have rows with the same number of tokens in them.
Answers (1)
The The graph of g (x) is the result of translating the graph of f (x) = 3x six units to the right. What is the equation of g (x) ? g (x) = 3x - 6 g (x) = 3x + 6 g (x) = 3x - 6 g (x) = 3x + 6 Mark this and return
Answers (1)
Consider the polynomial p (x) = 8x^3-8x^2-2x+2. Which binomial is not a factor of p (x) ? 2x+2 2x+1 2x-2 2x-1
Answers (1)
Home » Mathematics » The work of a student to solve the equation 2 (4x - 4) = 8 + 4x + 4 is shown below: Step 1. 2 (4x - 4) = 8 + 4x + 4 Step 2. 6x - 6 = 12 + 4x Step 3. 6x - 4x = 12 + 6 Step 4. 2x = 18 Step 5.
Sign Up Forgot Password?