Subtract 20/5 from 21/27
1st number: 21/27, 2nd number: 4 0/5
21/27 - 20/5 is -29/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 5 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
21/27 = 21 × 5/27 × 5 = 105/135 - Likewise, for the 2nd fraction, since 5 × 27 = 135,
20/5 = 20 × 27/5 × 27 = 540/135 - Subtract the two like fractions:
105/135 - 540/135 = 105 - 540/135 = -435/135 - After reducing the fraction, the answer is -29/9
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