Subtract 21/16 from 63/8
1st number: 7 7/8, 2nd number: 1 5/16
63/8 - 21/16 is 105/16.
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,
63/8 = 63 × 2/8 × 2 = 126/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
21/16 = 21 × 1/16 × 1 = 21/16 - Subtract the two like fractions:
126/16 - 21/16 = 126 - 21/16 = 105/16 - In mixed form: 69/16
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