Subtract 9/35 from 28/21
1st number: 1 7/21, 2nd number: 9/35
28/21 - 9/35 is 113/105.
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,
9/35 = 9 × 3/35 × 3 = 27/105 - Subtract the two like fractions:
140/105 - 27/105 = 140 - 27/105 = 113/105 - In mixed form: 18/105
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