Subtract 27/35 from 9/21
9/21 - 27/35 is -12/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
9/21 = 9 × 5/21 × 5 = 45/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
27/35 = 27 × 3/35 × 3 = 81/105 - Subtract the two like fractions:
45/105 - 81/105 = 45 - 81/105 = -36/105 - After reducing the fraction, the answer is -12/35
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