Subtract 35/42 from 6/21
6/21 - 35/42 is -23/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
6/21 = 6 × 2/21 × 2 = 12/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
35/42 = 35 × 1/42 × 1 = 35/42 - Subtract the two like fractions:
12/42 - 35/42 = 12 - 35/42 = -23/42
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