Subtract 21/6 from 18/5
1st number: 3 3/5, 2nd number: 3 3/6
18/5 - 21/6 is 1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
18/5 = 18 × 6/5 × 6 = 108/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Subtract the two like fractions:
108/30 - 105/30 = 108 - 105/30 = 3/30 - After reducing the fraction, the answer is 1/10
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