Subtract 28/15 from 35/21
1st number: 1 14/21, 2nd number: 1 13/15
35/21 - 28/15 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
35/21 = 35 × 5/21 × 5 = 175/105 - Likewise, for the 2nd fraction, since 15 × 7 = 105,
28/15 = 28 × 7/15 × 7 = 196/105 - Subtract the two like fractions:
175/105 - 196/105 = 175 - 196/105 = -21/105 - After reducing the fraction, the answer is -1/5
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