Subtract 28/20 from 30/50
1st number: 30/50, 2nd number: 1 8/20
30/50 - 28/20 is -4/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 50 × 2 = 100,
30/50 = 30 × 2/50 × 2 = 60/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
28/20 = 28 × 5/20 × 5 = 140/100 - Subtract the two like fractions:
60/100 - 140/100 = 60 - 140/100 = -80/100 - After reducing the fraction, the answer is -4/5
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