Subtract 20/5 from 21/6
1st number: 3 3/6, 2nd number: 4 0/5
21/6 - 20/5 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 5 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Likewise, for the 2nd fraction, since 5 × 6 = 30,
20/5 = 20 × 6/5 × 6 = 120/30 - Subtract the two like fractions:
105/30 - 120/30 = 105 - 120/30 = -15/30 - After reducing the fraction, the answer is -1/2
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