Subtract 49/36 from 18/21
1st number: 18/21, 2nd number: 1 13/36
18/21 - 49/36 is -127/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
18/21 = 18 × 12/21 × 12 = 216/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
49/36 = 49 × 7/36 × 7 = 343/252 - Subtract the two like fractions:
216/252 - 343/252 = 216 - 343/252 = -127/252
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