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3 July, 12:21

Jacob is using this rule.

''Start with a number, divide it by 2 and then add 3. Write down the result.''

a) What is the result when Jacob starts with 8?

b) What number did Jacob start with when the result is 5?

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Answers (1)
  1. 3 July, 13:01
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    A) 8 : 2 + 3 = 7

    b) x/2 + 3 = 5

    x = (5-3) * 2

    x = 2 * 2 = 4

    a) 7

    b) 4
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