Subtract 2/35 from 81/42
1st number: 1 39/42, 2nd number: 2/35
81/42 - 2/35 is 131/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
81/42 = 81 × 5/42 × 5 = 405/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
2/35 = 2 × 6/35 × 6 = 12/210 - Subtract the two like fractions:
405/210 - 12/210 = 405 - 12/210 = 393/210 - After reducing the fraction, the answer is 131/70
- In mixed form: 161/70
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