Subtract 35/16 from 42/40
1st number: 1 2/40, 2nd number: 2 3/16
42/40 - 35/16 is -91/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
42/40 = 42 × 2/40 × 2 = 84/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
35/16 = 35 × 5/16 × 5 = 175/80 - Subtract the two like fractions:
84/80 - 175/80 = 84 - 175/80 = -91/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-35/16 42/40-70/16 42/80-35/16 42/40-35/32 42/40-35/48 42/40-35/80