Subtract 81/70 from 7/2
1st number: 3 1/2, 2nd number: 1 11/70
7/2 - 81/70 is 82/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 2 × 35 = 70,
7/2 = 7 × 35/2 × 35 = 245/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
81/70 = 81 × 1/70 × 1 = 81/70 - Subtract the two like fractions:
245/70 - 81/70 = 245 - 81/70 = 164/70 - After reducing the fraction, the answer is 82/35
- In mixed form: 212/35
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