Subtract 81/21 from 4/36
1st number: 4/36, 2nd number: 3 18/21
4/36 - 81/21 is -236/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
4/36 = 4 × 7/36 × 7 = 28/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
81/21 = 81 × 12/21 × 12 = 972/252 - Subtract the two like fractions:
28/252 - 972/252 = 28 - 972/252 = -944/252 - After reducing the fraction, the answer is -236/63
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