Subtract 56/36 from 3/21
1st number: 3/21, 2nd number: 1 20/36
3/21 - 56/36 is -89/63.
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,
3/21 = 3 × 12/21 × 12 = 36/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
56/36 = 56 × 7/36 × 7 = 392/252 - Subtract the two like fractions:
36/252 - 392/252 = 36 - 392/252 = -356/252 - After reducing the fraction, the answer is -89/63
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