Subtract 16/18 from 21/24
21/24 - 16/18 is -1/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
21/24 = 21 × 3/24 × 3 = 63/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
16/18 = 16 × 4/18 × 4 = 64/72 - Subtract the two like fractions:
63/72 - 64/72 = 63 - 64/72 = -1/72
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