Subtract 20/16 from 21/27
1st number: 21/27, 2nd number: 1 4/16
21/27 - 20/16 is -17/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 16 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 27 × 16 = 432,
21/27 = 21 × 16/27 × 16 = 336/432 - Likewise, for the 2nd fraction, since 16 × 27 = 432,
20/16 = 20 × 27/16 × 27 = 540/432 - Subtract the two like fractions:
336/432 - 540/432 = 336 - 540/432 = -204/432 - After reducing the fraction, the answer is -17/36
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