Subtract 6/35 from 12/21
12/21 - 6/35 is 2/5.
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,
12/21 = 12 × 5/21 × 5 = 60/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
6/35 = 6 × 3/35 × 3 = 18/105 - Subtract the two like fractions:
60/105 - 18/105 = 60 - 18/105 = 42/105 - After reducing the fraction, the answer is 2/5
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