Subtract 42/16 from 5/7
1st number: 5/7, 2nd number: 2 10/16
5/7 - 42/16 is -107/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 16 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 7 × 16 = 112,
5/7 = 5 × 16/7 × 16 = 80/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
42/16 = 42 × 7/16 × 7 = 294/112 - Subtract the two like fractions:
80/112 - 294/112 = 80 - 294/112 = -214/112 - After reducing the fraction, the answer is -107/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7-42/16 5/7-84/16 5/14-42/16 5/7-42/32 15/7-42/16 5/21-42/16 5/7-42/48 25/7-42/16 5/35-42/16 5/7-42/80 35/7-42/16 5/49-42/16