Subtract 27/18 from 28/30
1st number: 28/30, 2nd number: 1 9/18
28/30 - 27/18 is -17/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
28/30 = 28 × 3/30 × 3 = 84/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
27/18 = 27 × 5/18 × 5 = 135/90 - Subtract the two like fractions:
84/90 - 135/90 = 84 - 135/90 = -51/90 - After reducing the fraction, the answer is -17/30
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