Subtract 84/42 from 8/72
1st number: 8/72, 2nd number: 2 0/42
8/72 - 84/42 is -17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
8/72 = 8 × 7/72 × 7 = 56/504 - Likewise, for the 2nd fraction, since 42 × 12 = 504,
84/42 = 84 × 12/42 × 12 = 1008/504 - Subtract the two like fractions:
56/504 - 1008/504 = 56 - 1008/504 = -952/504 - After reducing the fraction, the answer is -17/9
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