Subtract 20/18 from 7/90
1st number: 7/90, 2nd number: 1 2/18
7/90 - 20/18 is -31/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
7/90 = 7 × 1/90 × 1 = 7/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Subtract the two like fractions:
7/90 - 100/90 = 7 - 100/90 = -93/90 - After reducing the fraction, the answer is -31/30
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