Subtract 84/90 from 27/30
27/30 - 84/90 is -1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 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 90 × 1 = 90,
84/90 = 84 × 1/90 × 1 = 84/90 - Subtract the two like fractions:
81/90 - 84/90 = 81 - 84/90 = -3/90 - After reducing the fraction, the answer is -1/30
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