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8 August, 14:49

Solve using inverse operations

1. 5x + 10 = 15

2. r/4 - 1 = 4

+1
Answers (1)
  1. 8 August, 16:11
    0
    1)

    5x + 10 = 15

    - 10 - 10

    5x = 5

    x = 1

    2)

    r/4 - 1 = 4

    + 1 + 1

    r/4 = 5

    *4 * 4

    r = 20
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