Subtract 20/7 from 18/36
1st number: 18/36, 2nd number: 2 6/7
18/36 - 20/7 is -33/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
18/36 = 18 × 7/36 × 7 = 126/252 - Likewise, for the 2nd fraction, since 7 × 36 = 252,
20/7 = 20 × 36/7 × 36 = 720/252 - Subtract the two like fractions:
126/252 - 720/252 = 126 - 720/252 = -594/252 - After reducing the fraction, the answer is -33/14
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