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26 February, 09:03

What is the solution to this equation?

3x - 7 + 4x = 28

O A. x = 35

O B. x = 21

O c. x = 5

O D. x = 3

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Answers (2)
  1. 26 February, 09:20
    0
    C. x = 5

    Explanation:

    Step 1 - Simplify the equation by adding the common terms

    3x - 7 + 4x = 28

    3x + 4x - 7 = 28

    7x - 7 = 28

    Step 2 - Add seven to both sides of the equation

    7x - 7 = 28

    7x - 7 + 7 = 28 + 7

    7x = 35

    Step 3 - Divide both sides of the equation by seven

    7x = 35

    7x / 7 = 35 / 7

    x = 5

    Therefore, the correct answer should be 'c. x = 5.'
  2. 26 February, 10:16
    0
    x = 5

    Step-by-step explanation:

    3x - 7 + 4x = 28

    Combine like terms

    7x - 7 = 28

    Add 7 to each side

    7x - 7 + 7 = 28+7

    7x = 35

    Divide each side by 7

    7x/7 = 35/7

    x = 5
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