Subtract 15/48 from 1/20
1/20 - 15/48 is -21/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 20 × 12 = 240,
1/20 = 1 × 12/20 × 12 = 12/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
15/48 = 15 × 5/48 × 5 = 75/240 - Subtract the two like fractions:
12/240 - 75/240 = 12 - 75/240 = -63/240 - After reducing the fraction, the answer is -21/80
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