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56 is the lcd of 8 and 7. You can get this by multiplying 8x7. 8 and 7 have no common factors; that is why you multiply the two numbers to get the lcd.

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13y ago

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More answers

Prime factor each number.

12= 2x2x3

8=2x2x2

7=7

Multiply the factors the MOST it was used in any number.

2x2x2x3x7=168

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Wiki User

13y ago
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LCD(7, 8, 2) = 56.

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Wiki User

10y ago
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56

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Wiki User

15y ago
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56

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Wiki User

10y ago
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Q: What is the LCD of 12 8 and 7?
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