Subtract 8/20 from 21/9
1st number: 2 3/9, 2nd number: 8/20
21/9 - 8/20 is 29/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
21/9 = 21 × 20/9 × 20 = 420/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
8/20 = 8 × 9/20 × 9 = 72/180 - Subtract the two like fractions:
420/180 - 72/180 = 420 - 72/180 = 348/180 - After reducing the fraction, the answer is 29/15
- In mixed form: 114/15
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