Subtract 12/54 from 21/8
1st number: 2 5/8, 2nd number: 12/54
21/8 - 12/54 is 173/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
21/8 = 21 × 27/8 × 27 = 567/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
12/54 = 12 × 4/54 × 4 = 48/216 - Subtract the two like fractions:
567/216 - 48/216 = 567 - 48/216 = 519/216 - After reducing the fraction, the answer is 173/72
- In mixed form: 229/72
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