Subtract 42/81 from 1/35
1/35 - 42/81 is -463/945.
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,
1/35 = 1 × 81/35 × 81 = 81/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
42/81 = 42 × 35/81 × 35 = 1470/2835 - Subtract the two like fractions:
81/2835 - 1470/2835 = 81 - 1470/2835 = -1389/2835 - After reducing the fraction, the answer is -463/945
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/35-42/81 1/35-84/81 1/70-42/81 3/35-42/81 5/35-42/81 7/35-42/81