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7 June, 06:56

Given the equation: 4 (x - 3) = 20

Identify the reason for each step in solving the equation.

1st Step: 4x - 12 = 20

Reason:

2nd Step: 4x - 12 + 12 = 20 + 12

" 4x = 32

Reason:

3rd Step: 4x : 4 = 32 : 4

" x = 8

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Answers (1)
  1. 7 June, 08:18
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    Step-by-step explanation:

    4 (x - 3) = 20

    1st Step: 4x - 12 = 20

    Reason: Distribute

    2nd Step: 4x - 12 + 12 = 20 + 12

    " 4x = 32

    Reason: Add 12 to both sides

    3rd Step: 4x : 4 = 32 : 4

    " x = 8

    Reason: Divide both sides by 4
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