Subtract 21/80 from 63/40
1st number: 1 23/40, 2nd number: 21/80
63/40 - 21/80 is 21/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
63/40 = 63 × 2/40 × 2 = 126/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
21/80 = 21 × 1/80 × 1 = 21/80 - Subtract the two like fractions:
126/80 - 21/80 = 126 - 21/80 = 105/80 - After reducing the fraction, the answer is 21/16
- In mixed form: 15/16
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