Subtract 20/18 from 18/30
1st number: 18/30, 2nd number: 1 2/18
18/30 - 20/18 is -23/45.
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,
18/30 = 18 × 3/30 × 3 = 54/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Subtract the two like fractions:
54/90 - 100/90 = 54 - 100/90 = -46/90 - After reducing the fraction, the answer is -23/45
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