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19 May, 03:52

Explain why this statement is true:

7a + 4 - 2a = 7a + (-20) + 4

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Answers (1)
  1. 19 May, 06:45
    0
    This equation has one solution so given statement is true.

    Step-by-step explanation:

    7a + 4 - 2a = 7a + (-20) + 4

    5a + 4 = 7a - 16

    5a - 7a = - 16 - 4

    - 2a = - 20

    a = 10

    This equation has one solution so given statement is true.
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