Subtract 36/9 from 24/21
1st number: 1 3/21, 2nd number: 4 0/9
24/21 - 36/9 is -20/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
24/21 = 24 × 3/21 × 3 = 72/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
36/9 = 36 × 7/9 × 7 = 252/63 - Subtract the two like fractions:
72/63 - 252/63 = 72 - 252/63 = -180/63 - After reducing the fraction, the answer is -20/7
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