Subtract 42/36 from 5/21
1st number: 5/21, 2nd number: 1 6/36
5/21 - 42/36 is -13/14.
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,
5/21 = 5 × 12/21 × 12 = 60/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
42/36 = 42 × 7/36 × 7 = 294/252 - Subtract the two like fractions:
60/252 - 294/252 = 60 - 294/252 = -234/252 - After reducing the fraction, the answer is -13/14
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