Subtract 6/7 from 9/42
9/42 - 6/7 is -9/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
9/42 = 9 × 1/42 × 1 = 9/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
6/7 = 6 × 6/7 × 6 = 36/42 - Subtract the two like fractions:
9/42 - 36/42 = 9 - 36/42 = -27/42 - After reducing the fraction, the answer is -9/14
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