Subtract 9/14 from 21/36
21/36 - 9/14 is -5/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 14 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Likewise, for the 2nd fraction, since 14 × 18 = 252,
9/14 = 9 × 18/14 × 18 = 162/252 - Subtract the two like fractions:
147/252 - 162/252 = 147 - 162/252 = -15/252 - After reducing the fraction, the answer is -5/84
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