Subtract 21/8 from 12/27
1st number: 12/27, 2nd number: 2 5/8
12/27 - 21/8 is -157/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 8 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 27 × 8 = 216,
12/27 = 12 × 8/27 × 8 = 96/216 - Likewise, for the 2nd fraction, since 8 × 27 = 216,
21/8 = 21 × 27/8 × 27 = 567/216 - Subtract the two like fractions:
96/216 - 567/216 = 96 - 567/216 = -471/216 - After reducing the fraction, the answer is -157/72
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