Subtract 54/8 from 27/18
1st number: 1 9/18, 2nd number: 6 6/8
27/18 - 54/8 is -21/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
27/18 = 27 × 4/18 × 4 = 108/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
54/8 = 54 × 9/8 × 9 = 486/72 - Subtract the two like fractions:
108/72 - 486/72 = 108 - 486/72 = -378/72 - After reducing the fraction, the answer is -21/4
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