Subtract 42/16 from 8/40
1st number: 8/40, 2nd number: 2 10/16
8/40 - 42/16 is -97/40.
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,
8/40 = 8 × 2/40 × 2 = 16/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
42/16 = 42 × 5/16 × 5 = 210/80 - Subtract the two like fractions:
16/80 - 210/80 = 16 - 210/80 = -194/80 - After reducing the fraction, the answer is -97/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40-42/16 8/40-84/16 8/80-42/16 8/40-42/32 24/40-42/16 8/40-42/48 8/40-42/80 56/40-42/16