Subtract 63/12 from 21/80
1st number: 21/80, 2nd number: 5 3/12
21/80 - 63/12 is -399/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 12 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Likewise, for the 2nd fraction, since 12 × 20 = 240,
63/12 = 63 × 20/12 × 20 = 1260/240 - Subtract the two like fractions:
63/240 - 1260/240 = 63 - 1260/240 = -1197/240 - After reducing the fraction, the answer is -399/80
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