Subtract 20/8 from 15/54
1st number: 15/54, 2nd number: 2 4/8
15/54 - 20/8 is -20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 8 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
15/54 = 15 × 4/54 × 4 = 60/216 - Likewise, for the 2nd fraction, since 8 × 27 = 216,
20/8 = 20 × 27/8 × 27 = 540/216 - Subtract the two like fractions:
60/216 - 540/216 = 60 - 540/216 = -480/216 - After reducing the fraction, the answer is -20/9
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