Subtract 21/15 from 8/45
1st number: 8/45, 2nd number: 1 6/15
8/45 - 21/15 is -11/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
8/45 = 8 × 1/45 × 1 = 8/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
21/15 = 21 × 3/15 × 3 = 63/45 - Subtract the two like fractions:
8/45 - 63/45 = 8 - 63/45 = -55/45 - After reducing the fraction, the answer is -11/9
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