Subtract 81/21 from 60/15
1st number: 4 0/15, 2nd number: 3 18/21
60/15 - 81/21 is 1/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
60/15 = 60 × 7/15 × 7 = 420/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
81/21 = 81 × 5/21 × 5 = 405/105 - Subtract the two like fractions:
420/105 - 405/105 = 420 - 405/105 = 15/105 - After reducing the fraction, the answer is 1/7
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