Subtract 28/80 from 3/20
3/20 - 28/80 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
3/20 = 3 × 4/20 × 4 = 12/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
28/80 = 28 × 1/80 × 1 = 28/80 - Subtract the two like fractions:
12/80 - 28/80 = 12 - 28/80 = -16/80 - After reducing the fraction, the answer is -1/5
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