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15 February, 13:05

Step 1 ⇒ x - 3 = 3 (x + 3)

Step 2 ⇒ x - 3 = 3x + 9

Step 3 ⇒ x = 3x + 12

Step 4 ⇒ - 2x = 12

Step 5 ⇒ x = - 6

Identify the property of equality which yields Step 5.

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Answers (2)
  1. 15 February, 14:33
    0
    In step four, you'd divide each side by - 2 to isolate x

    By dividing both sides by - 2, you are using the property of equality and it gets you to the answer in Step 5.
  2. 15 February, 16:38
    0
    the answer is property of division

    Step-by-step explanation:

    look at step 4 then compare it to step 5 how 12 got divided by
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