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4 May, 02:24

Justify each step in solving the equation 4X equals seven times X - 3

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Answers (2)
  1. 4 May, 02:29
    0
    4x = 7 (x-3)

    1. Distribute that multiplicand 7: 4x = 7x - 21

    2. Group the x terms together: Subtract 4x from both sides: 0 = 3x - 21

    3. Solve for x: Add 21 to both sides: 21 = 3x

    4. Divide both sides by 3 to obtain x = 7 (answer)
  2. 4 May, 02:52
    0
    4X=7X-3

    Solve for X:

    4 X = 7 X - 3

    Subtract 7 X from both sides:

    4 X - 7 X = (7 X - 7 X) - 3

    4 X - 7 X = - 3 X:

    -3 X = (7 X - 7 X) - 3

    7 X - 7 X = 0:

    -3 X = - 3

    Divide both sides of - 3 X = - 3 by - 3:

    (-3 X) / (-3) = (-3) / (-3)

    (-3) / (-3) = 1:

    X = (-3) / (-3)

    (-3) / (-3) = 1:

    Answer: X = 1
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