Subtract 21/5 from 18/60
1st number: 18/60, 2nd number: 4 1/5
18/60 - 21/5 is -39/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
18/60 = 18 × 1/60 × 1 = 18/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
21/5 = 21 × 12/5 × 12 = 252/60 - Subtract the two like fractions:
18/60 - 252/60 = 18 - 252/60 = -234/60 - After reducing the fraction, the answer is -39/10
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