Subtract 21/15 from 28/9
1st number: 3 1/9, 2nd number: 1 6/15
28/9 - 21/15 is 77/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
28/9 = 28 × 5/9 × 5 = 140/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
21/15 = 21 × 3/15 × 3 = 63/45 - Subtract the two like fractions:
140/45 - 63/45 = 140 - 63/45 = 77/45 - In mixed form: 132/45
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