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    Question

    Choose one of the following correct combination of

    mathematical signs which can be filled sequentially to balance the following equation.
    A ÷, ×, –, =, × Correct Answer Incorrect Answer
    B Ă·, Ă—, =, +. + Correct Answer Incorrect Answer
    C ÷, ×, +, =, – Correct Answer Incorrect Answer
    D +, =, Ă·, Ă—, + Correct Answer Incorrect Answer

    Solution

    After interchanged- 28 ÷ 4 x 3 + 9 = 42 – 12 7 x 3 + 9 =30 21 + 9 = 30 30 = 30

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