Subtract 75/30 from 20/18
1st number: 1 2/18, 2nd number: 2 15/30
20/18 - 75/30 is -25/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
75/30 = 75 × 3/30 × 3 = 225/90 - Subtract the two like fractions:
100/90 - 225/90 = 100 - 225/90 = -125/90 - After reducing the fraction, the answer is -25/18
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