Subtract 72/42 from 8/6
1st number: 1 2/6, 2nd number: 1 30/42
8/6 - 72/42 is -8/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
8/6 = 8 × 7/6 × 7 = 56/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
72/42 = 72 × 1/42 × 1 = 72/42 - Subtract the two like fractions:
56/42 - 72/42 = 56 - 72/42 = -16/42 - After reducing the fraction, the answer is -8/21
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