Subtract 30/16 from 28/7
1st number: 4 0/7, 2nd number: 1 14/16
28/7 - 30/16 is 17/8.
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,
28/7 = 28 × 16/7 × 16 = 448/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
30/16 = 30 × 7/16 × 7 = 210/112 - Subtract the two like fractions:
448/112 - 210/112 = 448 - 210/112 = 238/112 - After reducing the fraction, the answer is 17/8
- In mixed form: 21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-30/16 28/7-60/16 28/14-30/16 28/7-30/32 84/7-30/16 28/7-90/16 28/21-30/16 28/7-30/48 28/35-30/16 28/7-30/80 28/49-30/16