Subtract 28/21 from 4/9
1st number: 4/9, 2nd number: 1 7/21
4/9 - 28/21 is -8/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
4/9 = 4 × 7/9 × 7 = 28/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
28/21 = 28 × 3/21 × 3 = 84/63 - Subtract the two like fractions:
28/63 - 84/63 = 28 - 84/63 = -56/63 - After reducing the fraction, the answer is -8/9
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