Subtract 21/9 from 40/45
1st number: 40/45, 2nd number: 2 3/9
40/45 - 21/9 is -13/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
40/45 = 40 × 1/45 × 1 = 40/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
21/9 = 21 × 5/9 × 5 = 105/45 - Subtract the two like fractions:
40/45 - 105/45 = 40 - 105/45 = -65/45 - After reducing the fraction, the answer is -13/9
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