Answers

Subtract 3/9 from 4/7

4/7 - 3/9 is 5/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 9 is 63
2. For the 1st fraction, since 7 × 9 = 63,
   4/7 = 4 × 9/7 × 9 = 36/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   3/9 = 3 × 7/9 × 7 = 21/63
4. Subtract the two fractions:
   36/63 - 21/63 = 36 - 21/63 = 15/63
5. After reducing the fraction, the answer is 5/21

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