Subtract 28/18 from 20/30
1st number: 20/30, 2nd number: 1 10/18
20/30 - 28/18 is -8/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Subtract the two like fractions:
60/90 - 140/90 = 60 - 140/90 = -80/90 - After reducing the fraction, the answer is -8/9
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