Subtract 72/12 from 8/42
1st number: 8/42, 2nd number: 6 0/12
8/42 - 72/12 is -122/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
8/42 = 8 × 2/42 × 2 = 16/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
72/12 = 72 × 7/12 × 7 = 504/84 - Subtract the two like fractions:
16/84 - 504/84 = 16 - 504/84 = -488/84 - After reducing the fraction, the answer is -122/21
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