Subtract 20/18 from 30/36
1st number: 30/36, 2nd number: 1 2/18
30/36 - 20/18 is -5/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
30/36 = 30 × 1/36 × 1 = 30/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
20/18 = 20 × 2/18 × 2 = 40/36 - Subtract the two like fractions:
30/36 - 40/36 = 30 - 40/36 = -10/36 - After reducing the fraction, the answer is -5/18
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