Subtract 72/21 from 24/9
1st number: 2 6/9, 2nd number: 3 9/21
24/9 - 72/21 is -16/21.
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,
24/9 = 24 × 7/9 × 7 = 168/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
72/21 = 72 × 3/21 × 3 = 216/63 - Subtract the two like fractions:
168/63 - 216/63 = 168 - 216/63 = -48/63 - After reducing the fraction, the answer is -16/21
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