Subtract 72/20 from 21/6
1st number: 3 3/6, 2nd number: 3 12/20
21/6 - 72/20 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
21/6 = 21 × 10/6 × 10 = 210/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
72/20 = 72 × 3/20 × 3 = 216/60 - Subtract the two like fractions:
210/60 - 216/60 = 210 - 216/60 = -6/60 - After reducing the fraction, the answer is -1/10
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