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Least Common Denominators
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ACCUPLACER
AR.51 Least Common Denominators
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For the fractions 21/32, 41/48, and 61/64, which option uses the least common denominator correctly?
A
LCD = 64; 21/32 = 42/64, 41/48 = 41/64, and 61/64 = 61/64
B
LCD = 192; 21/32 = 126/192, 41/48 = 164/192, and 61/64 = 183/192
C
LCD = 384; 21/32 = 252/384, 41/48 = 328/384, and 61/64 = 366/384
D
LCD = 192; 21/32 = 126/192, 41/48 = 162/192, and 61/64 = 183/192
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