Subtract 20/16 from 45/7
1st number: 6 3/7, 2nd number: 1 4/16
45/7 - 20/16 is 145/28.
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,
45/7 = 45 × 16/7 × 16 = 720/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
20/16 = 20 × 7/16 × 7 = 140/112 - Subtract the two like fractions:
720/112 - 140/112 = 720 - 140/112 = 580/112 - After reducing the fraction, the answer is 145/28
- In mixed form: 55/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-20/16 45/7-40/16 45/14-20/16 45/7-20/32 45/7-60/16 45/21-20/16 45/7-20/48 45/35-20/16 45/7-20/80 45/49-20/16