Subtract 28/35 from 28/21
1st number: 1 7/21, 2nd number: 28/35
28/21 - 28/35 is 8/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
28/21 = 28 × 5/21 × 5 = 140/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
28/35 = 28 × 3/35 × 3 = 84/105 - Subtract the two like fractions:
140/105 - 84/105 = 140 - 84/105 = 56/105 - After reducing the fraction, the answer is 8/15
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