Subtract 81/30 from 90/25
1st number: 3 15/25, 2nd number: 2 21/30
90/25 - 81/30 is 9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 25 × 6 = 150,
90/25 = 90 × 6/25 × 6 = 540/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
81/30 = 81 × 5/30 × 5 = 405/150 - Subtract the two like fractions:
540/150 - 405/150 = 540 - 405/150 = 135/150 - After reducing the fraction, the answer is 9/10
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