Subtract 28/63 from 2/21
2/21 - 28/63 is -22/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
2/21 = 2 × 3/21 × 3 = 6/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
28/63 = 28 × 1/63 × 1 = 28/63 - Subtract the two like fractions:
6/63 - 28/63 = 6 - 28/63 = -22/63
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