Mathematics · Mathematical Operations
If the numbers 15 and 21 are interchanged, then which of the following equations will be correctly balanced?
- 163 ÷ 15 + 21 × 5 - 4 = 74✓
- 262 ÷ 31 - 21 + 15 × 3 = 80
- 324 - 21 ÷ 3 + 15 - 7 = 23
- 426 + 21 × 15 ÷ 3 - 14 = 108
Correct answer
63 ÷ 15 + 21 × 5 - 4 = 74
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