Subtract 4/8 from 21/27
21/27 - 4/8 is 5/18.
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,
21/27 = 21 × 8/27 × 8 = 168/216 - Likewise, for the 2nd fraction, since 8 × 27 = 216,
4/8 = 4 × 27/8 × 27 = 108/216 - Subtract the two like fractions:
168/216 - 108/216 = 168 - 108/216 = 60/216 - After reducing the fraction, the answer is 5/18
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