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Q: What is LCD by inspection for 5 over 6 7 over 8 5 over 9 2 over 72?

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LCD is a property of whole numbers. Since 2 over 9 is not a whole number it cannot have an LCD.

If that's 1/8, 2/9, 1/4, the LCD is 72

LCD(9, 3y) = 9y

2/3 of 72 = 48

3k/40 +k/18 factoring 40=2*2*2*5 18=2*3*3 LCD=2*2*2*5*3*3 LCD=360

60

18

8.

4

100

6

2

36

10

14

40

8

28.

72/36 = 2/1 = 2

4

Simplified.. 48/72 = 2/3

36 / 72 = 1/2

36 over 72 is equal to 1 over 2, which is a half or 0.5 in decimal.

72/108 = 2/3

72/36 = 12/6 = 2/1 = 2