Subtract 12/70 from 81/35
1st number: 2 11/35, 2nd number: 12/70
81/35 - 12/70 is 15/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
81/35 = 81 × 2/35 × 2 = 162/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
12/70 = 12 × 1/70 × 1 = 12/70 - Subtract the two like fractions:
162/70 - 12/70 = 162 - 12/70 = 150/70 - After reducing the fraction, the answer is 15/7
- In mixed form: 21/7
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