Subtract 9/30 from 20/90
20/90 - 9/30 is -7/90.
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,
20/90 = 20 × 1/90 × 1 = 20/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
9/30 = 9 × 3/30 × 3 = 27/90 - Subtract the two like fractions:
20/90 - 27/90 = 20 - 27/90 = -7/90
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