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Direction: Correct the following equations by interchanging the two signs.

  1. 16 - 21 ÷ 7 x 6 + 3 = 31
    1. - and +
    2. + and x
    3. ÷ and +
    4. ÷ and x
    5. - and x
Correct Option: B

If we interchange of signs '+' and 'x', then the equation changes into
16 - 21 ÷ 7 + 6 x 3 = 16 - 3 + 18 = 31


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