Subtract 21/36 from 2/21
2/21 - 21/36 is -41/84.
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,
2/21 = 2 × 12/21 × 12 = 24/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Subtract the two like fractions:
24/252 - 147/252 = 24 - 147/252 = -123/252 - After reducing the fraction, the answer is -41/84
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