Question
Interchanging which two signs will make the following equation correct?
15 + 3 × 9 – 4 ÷ 16 = 57
Solution
Given: 15 + 3 × 9 – 4 ÷ 16 = 57
d) + and ÷
15 ÷ 3 × 9 – 4 + 16 = 57
=> 5 × 9 – 4 + 16 = 57
=> 45 – 4 + 16 = 57
=> 61 – 4 = 57
=> 57 = 57
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