Subtract 21/6 from 20/30
1st number: 20/30, 2nd number: 3 3/6
20/30 - 21/6 is -17/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
20/30 = 20 × 1/30 × 1 = 20/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Subtract the two like fractions:
20/30 - 105/30 = 20 - 105/30 = -85/30 - After reducing the fraction, the answer is -17/6
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