Subtract 9/21 from 4/9
49 - 921 is 163.
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,
49 = 4 × 79 × 7 = 2863 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
921 = 9 × 321 × 3 = 2763 - Subtract the two like fractions:
2863 - 2763 = 28 - 2763 = 163
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