Subtract 21/5 from 63/16
1st number: 3 15/16, 2nd number: 4 1/5
63/16 - 21/5 is -21/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
63/16 = 63 × 5/16 × 5 = 315/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
21/5 = 21 × 16/5 × 16 = 336/80 - Subtract the two like fractions:
315/80 - 336/80 = 315 - 336/80 = -21/80
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