Subtract 7/40 from 21/16
1st number: 1 5/16, 2nd number: 7/40
21/16 - 7/40 is 91/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
7/40 = 7 × 2/40 × 2 = 14/80 - Subtract the two like fractions:
105/80 - 14/80 = 105 - 14/80 = 91/80 - In mixed form: 111/80
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