Add 28/84 and 40/25
1st number: 28/84, 2nd number: 1 15/25
28/84 + 40/25 is 29/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 25 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
28/84 = 28 × 25/84 × 25 = 700/2100 - Likewise, for the 2nd fraction, since 25 × 84 = 2100,
40/25 = 40 × 84/25 × 84 = 3360/2100 - Add the two like fractions:
700/2100 + 3360/2100 = 700 + 3360/2100 = 4060/2100 - 4060/2100 simplified gives 29/15
- So, 28/84 + 40/25 = 29/15
In mixed form: 114/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84+40/25 28/84+80/25 28/84+40/50 28/84+40/75