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Question
Find the LCM:
45, 86
Solution
| 3 | 45 |
| 3 | 15 |
| 5 | 5 |
| 1 |
| 2 | 86 |
| 43 | 43 |
| 1 |
45 = 3 × 3 × 5
86 = 2 × 43
∴ LCM = 3 × 3 × 5 × 2 × 43
= 45 × 86
= 3870
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