Subtract 63/28 from 21/80
1st number: 21/80, 2nd number: 2 7/28
21/80 - 63/28 is -159/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 28 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560 - Likewise, for the 2nd fraction, since 28 × 20 = 560,
63/28 = 63 × 20/28 × 20 = 1260/560 - Subtract the two like fractions:
147/560 - 1260/560 = 147 - 1260/560 = -1113/560 - After reducing the fraction, the answer is -159/80
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