Subtract 1/35 from 42/40
1st number: 1 2/40, 2nd number: 1/35
42/40 - 1/35 is 143/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
1/35 = 1 × 8/35 × 8 = 8/280 - Subtract the two like fractions:
294/280 - 8/280 = 294 - 8/280 = 286/280 - After reducing the fraction, the answer is 143/140
- In mixed form: 13/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-1/35 42/40-2/35 42/80-1/35 42/40-1/70 42/40-3/35 42/40-5/35 42/40-7/35