Subtract 1/4 from 81/30
1st number: 2 21/30, 2nd number: 1/4
81/30 - 1/4 is 49/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
81/30 = 81 × 2/30 × 2 = 162/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
1/4 = 1 × 15/4 × 15 = 15/60 - Subtract the two like fractions:
162/60 - 15/60 = 162 - 15/60 = 147/60 - After reducing the fraction, the answer is 49/20
- In mixed form: 29/20
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