Subtract 81/30 from 4/90
1st number: 4/90, 2nd number: 2 21/30
4/90 - 81/30 is -239/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
4/90 = 4 × 1/90 × 1 = 4/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
81/30 = 81 × 3/30 × 3 = 243/90 - Subtract the two like fractions:
4/90 - 243/90 = 4 - 243/90 = -239/90
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