Discussion
If + stands for ‘division’, × stands for ‘addition’, - stands for ‘multiplication’ and ÷ stands for subtraction, then which of the following equations is correct?
Answer: D
Correct answer: 36 -6 + 3 × 5 ÷ 3 = 74
Substituting in this option gives \[ 36 \times 6 \div 3 + 5 - 3. \] Multiplication and division first, left to right: \( 36\times6 = 216 \), then \( 216\div3 = 72 \). Then \( 72 + 5 - 3 = 74 \), which matches. The other three options do not balance once their signs are replaced.
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