Add 28/16 and 40/25
1st number: 1 12/16, 2nd number: 1 15/25
28/16 + 40/25 is 67/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 25 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 16 × 25 = 400,
28/16 = 28 × 25/16 × 25 = 700/400 - Likewise, for the 2nd fraction, since 25 × 16 = 400,
40/25 = 40 × 16/25 × 16 = 640/400 - Add the two like fractions:
700/400 + 640/400 = 700 + 640/400 = 1340/400 - 1340/400 simplified gives 67/20
- So, 28/16 + 40/25 = 67/20
In mixed form: 37/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16+40/25 28/16+80/25 28/32+40/25 28/16+40/50 84/16+40/25 28/48+40/25 28/16+40/75 28/80+40/25