Subtract 21/48 from 42/40
1st number: 1 2/40, 2nd number: 21/48
42/40 - 21/48 is 49/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 40 × 6 = 240,
42/40 = 42 × 6/40 × 6 = 252/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
21/48 = 21 × 5/48 × 5 = 105/240 - Subtract the two like fractions:
252/240 - 105/240 = 252 - 105/240 = 147/240 - After reducing the fraction, the answer is 49/80
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