Subtract 12/81 from 42/35
1st number: 1 7/35, 2nd number: 12/81
42/35 - 12/81 is 142/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
42/35 = 42 × 81/35 × 81 = 3402/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
12/81 = 12 × 35/81 × 35 = 420/2835 - Subtract the two like fractions:
3402/2835 - 420/2835 = 3402 - 420/2835 = 2982/2835 - After reducing the fraction, the answer is 142/135
- In mixed form: 17/135
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