Subtract 30/5 from 15/20
1st number: 15/20, 2nd number: 6 0/5
15/20 - 30/5 is -21/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
30/5 = 30 × 4/5 × 4 = 120/20 - Subtract the two like fractions:
15/20 - 120/20 = 15 - 120/20 = -105/20 - After reducing the fraction, the answer is -21/4
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