Subtract 72/27 from 27/90
1st number: 27/90, 2nd number: 2 18/27
27/90 - 72/27 is -71/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
27/90 = 27 × 3/90 × 3 = 81/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
72/27 = 72 × 10/27 × 10 = 720/270 - Subtract the two like fractions:
81/270 - 720/270 = 81 - 720/270 = -639/270 - After reducing the fraction, the answer is -71/30
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