Subtract 24/81 from 42/35
1st number: 1 7/35, 2nd number: 24/81
42/35 - 24/81 is 122/135.
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,
24/81 = 24 × 35/81 × 35 = 840/2835 - Subtract the two like fractions:
3402/2835 - 840/2835 = 3402 - 840/2835 = 2562/2835 - After reducing the fraction, the answer is 122/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/35-24/81 42/35-48/81 42/70-24/81 42/35-72/81