Which two signs should be interchanged to make the following equation correct?20 − 3 × 10 + 6 ÷ 3 = 48
A. + and ×
B. + and −
C. − and ×
D. ÷ and −
A. + and ×
B. + and −
C. − and ×
D. ÷ and −
Best answer
Answer: B. + and −
Answer: (B) + and −
Interchanging + and − gives \(20 + 3 \times 10 - 6 \div 3 = 48\).
By BODMAS the left side is 48, which equals the right side.
None of the other interchanges makes the two sides equal.
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