Subtract 20/16 from 18/7
1st number: 2 4/7, 2nd number: 1 4/16
18/7 - 20/16 is 37/28.
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,
18/7 = 18 × 16/7 × 16 = 288/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
20/16 = 20 × 7/16 × 7 = 140/112 - Subtract the two like fractions:
288/112 - 140/112 = 288 - 140/112 = 148/112 - After reducing the fraction, the answer is 37/28
- In mixed form: 19/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7-20/16 18/7-40/16 18/14-20/16 18/7-20/32 54/7-20/16 18/7-60/16 18/21-20/16 18/7-20/48 90/7-20/16 18/35-20/16 18/7-20/80 18/49-20/16