Subtract 21/20 from 30/50
1st number: 30/50, 2nd number: 1 1/20
30/50 - 21/20 is -9/20.
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,
21/20 = 21 × 5/20 × 5 = 105/100 - Subtract the two like fractions:
60/100 - 105/100 = 60 - 105/100 = -45/100 - After reducing the fraction, the answer is -9/20
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