Subtract 72/18 from 27/30
1st number: 27/30, 2nd number: 4 0/18
27/30 - 72/18 is -31/10.
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,
27/30 = 27 × 3/30 × 3 = 81/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
72/18 = 72 × 5/18 × 5 = 360/90 - Subtract the two like fractions:
81/90 - 360/90 = 81 - 360/90 = -279/90 - After reducing the fraction, the answer is -31/10
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