Subtract 28/50 from 7/20
7/20 - 28/50 is -21/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
7/20 = 7 × 5/20 × 5 = 35/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
28/50 = 28 × 2/50 × 2 = 56/100 - Subtract the two like fractions:
35/100 - 56/100 = 35 - 56/100 = -21/100
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