Subtract 21/80 from 49/42
1st number: 1 7/42, 2nd number: 21/80
49/42 - 21/80 is 217/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
49/42 = 49 × 40/42 × 40 = 1960/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
21/80 = 21 × 21/80 × 21 = 441/1680 - Subtract the two like fractions:
1960/1680 - 441/1680 = 1960 - 441/1680 = 1519/1680 - After reducing the fraction, the answer is 217/240
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