Subtract 42/40 from 70/32
1st number: 2 6/32, 2nd number: 1 2/40
70/32 - 42/40 is 91/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 40 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
70/32 = 70 × 5/32 × 5 = 350/160 - Likewise, for the 2nd fraction, since 40 × 4 = 160,
42/40 = 42 × 4/40 × 4 = 168/160 - Subtract the two like fractions:
350/160 - 168/160 = 350 - 168/160 = 182/160 - After reducing the fraction, the answer is 91/80
- In mixed form: 111/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/32-84/40 70/64-42/40 70/32-42/80 70/96-42/40