Subtract 28/49 from 21/20
1st number: 1 1/20, 2nd number: 28/49
21/20 - 28/49 is 67/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
21/20 = 21 × 49/20 × 49 = 1029/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
28/49 = 28 × 20/49 × 20 = 560/980 - Subtract the two like fractions:
1029/980 - 560/980 = 1029 - 560/980 = 469/980 - After reducing the fraction, the answer is 67/140
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