Subtract 15/5 from 27/90
1st number: 27/90, 2nd number: 3 0/5
27/90 - 15/5 is -27/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
27/90 = 27 × 1/90 × 1 = 27/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
15/5 = 15 × 18/5 × 18 = 270/90 - Subtract the two like fractions:
27/90 - 270/90 = 27 - 270/90 = -243/90 - After reducing the fraction, the answer is -27/10
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