Subtract 9/5 from 81/30
1st number: 2 21/30, 2nd number: 1 4/5
81/30 - 9/5 is 9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 5 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Likewise, for the 2nd fraction, since 5 × 6 = 30,
9/5 = 9 × 6/5 × 6 = 54/30 - Subtract the two like fractions:
81/30 - 54/30 = 81 - 54/30 = 27/30 - After reducing the fraction, the answer is 9/10
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