Subtract 21/14 from 7/80
1st number: 7/80, 2nd number: 1 7/14
7/80 - 21/14 is -113/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 14 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
7/80 = 7 × 7/80 × 7 = 49/560 - Likewise, for the 2nd fraction, since 14 × 40 = 560,
21/14 = 21 × 40/14 × 40 = 840/560 - Subtract the two like fractions:
49/560 - 840/560 = 49 - 840/560 = -791/560 - After reducing the fraction, the answer is -113/80
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