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What is the lowest common denomiator of the following sets of fractions?
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a. `8`
b. `15`
c. `6`
d. `36`
a. `text(8 is the lowest number that is a multiple of both 4 and 8)`
`:.\ text(LCD) (1/4, 1/8) = 8`
b. `text(15 is the lowest number that is a multiple of both 3 and 5)`
`:.\ text(LCD) (2/3, 4/5)= 15`
c. `text(6 is the lowest number that is a multiple of 2, 3 and 6)`
`:.\ text(LCD) (1/2, 2/3, 1/6) = 6`
d. `text(36 is the lowest number that is a multiple of 9, 6 and 12)`
`:.\ text(LCD) (1/9, 5/6, 7/12) = 36`