Subtract 7/24 from 21/80
21/80 - 7/24 is -7/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 24 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 24 × 10 = 240,
7/24 = 7 × 10/24 × 10 = 70/240 - Subtract the two like fractions:
63/240 - 70/240 = 63 - 70/240 = -7/240
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