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Q: Which two signs should be interchanged to balance the given equation? 15 ÷ 5 × 27 + 3 - 9 = 51
  • A. + and ×
  • B. ÷ and ×
  • C. ÷ and +
  • D. + and –
Correct Answer: Option C - 15 ÷ 5 × 27 + 3 – 9 = 51 From option (c) Interchanging the signs - 15 + 5 × 27 ÷ 3 – 9 = 51 15 + 5 × 9 – 9 = 51 15 + 45 – 9 = 51 60 – 9 = 51 51 = 51
C. 15 ÷ 5 × 27 + 3 – 9 = 51 From option (c) Interchanging the signs - 15 + 5 × 27 ÷ 3 – 9 = 51 15 + 5 × 9 – 9 = 51 15 + 45 – 9 = 51 60 – 9 = 51 51 = 51

Explanations:

15 ÷ 5 × 27 + 3 – 9 = 51 From option (c) Interchanging the signs - 15 + 5 × 27 ÷ 3 – 9 = 51 15 + 5 × 9 – 9 = 51 15 + 45 – 9 = 51 60 – 9 = 51 51 = 51