Subtract 27/10 from 28/90
1st number: 28/90, 2nd number: 2 7/10
28/90 - 27/10 is -43/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
28/90 = 28 × 1/90 × 1 = 28/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
27/10 = 27 × 9/10 × 9 = 243/90 - Subtract the two like fractions:
28/90 - 243/90 = 28 - 243/90 = -215/90 - After reducing the fraction, the answer is -43/18
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