Mathematics · Mathematical Operations
By interchanging the given two numbers '1' and '9', which of the following equations will NOT be correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11 + 9 × 3 - 4 = 8
- 29 - 1 + 7 = -3✓
- 39 × 2 + 1 - 4 = 7
- 49 × 2 - 1 + 8 = 1
Correct answer
9 - 1 + 7 = -3
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