Subtract 20/10 from 27/18
1st number: 1 9/18, 2nd number: 2 0/10
27/18 - 20/10 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
27/18 = 27 × 5/18 × 5 = 135/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
20/10 = 20 × 9/10 × 9 = 180/90 - Subtract the two like fractions:
135/90 - 180/90 = 135 - 180/90 = -45/90 - After reducing the fraction, the answer is -1/2
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