Subtract 21/6 from 30/60
1st number: 30/60, 2nd number: 3 3/6
30/60 - 21/6 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 6 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
30/60 = 30 × 1/60 × 1 = 30/60 - Likewise, for the 2nd fraction, since 6 × 10 = 60,
21/6 = 21 × 10/6 × 10 = 210/60 - Subtract the two like fractions:
30/60 - 210/60 = 30 - 210/60 = -180/60 - After reducing the fraction, the answer is -3/1
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