Subtract 21/16 from 54/8
1st number: 6 6/8, 2nd number: 1 5/16
54/8 - 21/16 is 87/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 8 × 2 = 16,
54/8 = 54 × 2/8 × 2 = 108/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
21/16 = 21 × 1/16 × 1 = 21/16 - Subtract the two like fractions:
108/16 - 21/16 = 108 - 21/16 = 87/16 - In mixed form: 57/16
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