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28 May, 12:39

Evaluate 7 a - 5 b when a = 4 and b = 3

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Answers (2)
  1. 28 May, 12:42
    0
    7a = 7 x 4

    28

    28 - 5b

    5b = 15

    28-15 = 13
  2. 28 May, 13:07
    0
    7x4=28, 5x3=15. 28-15=13
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