Subtract 63/40 from 21/48
1st number: 21/48, 2nd number: 1 23/40
21/48 - 63/40 is -91/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 40 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
21/48 = 21 × 5/48 × 5 = 105/240 - Likewise, for the 2nd fraction, since 40 × 6 = 240,
63/40 = 63 × 6/40 × 6 = 378/240 - Subtract the two like fractions:
105/240 - 378/240 = 105 - 378/240 = -273/240 - After reducing the fraction, the answer is -91/80
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