Subtract 21/8 from 45/27
1st number: 1 18/27, 2nd number: 2 5/8
45/27 - 21/8 is -23/24.
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,
45/27 = 45 × 8/27 × 8 = 360/216 - Likewise, for the 2nd fraction, since 8 × 27 = 216,
21/8 = 21 × 27/8 × 27 = 567/216 - Subtract the two like fractions:
360/216 - 567/216 = 360 - 567/216 = -207/216 - After reducing the fraction, the answer is -23/24
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