Subtract 21/45 from 12/9
1st number: 1 3/9, 2nd number: 21/45
12/9 - 21/45 is 13/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
12/9 = 12 × 5/9 × 5 = 60/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Subtract the two like fractions:
60/45 - 21/45 = 60 - 21/45 = 39/45 - After reducing the fraction, the answer is 13/15
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