Subtract 81/7 from 42/5
1st number: 8 2/5, 2nd number: 11 4/7
42/5 - 81/7 is -111/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
42/5 = 42 × 7/5 × 7 = 294/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
81/7 = 81 × 5/7 × 5 = 405/35 - Subtract the two like fractions:
294/35 - 405/35 = 294 - 405/35 = -111/35
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