Add 28/54 and 20/25
28/54 + 20/25 is 178/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 25 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 54 × 25 = 1350,
28/54 = 28 × 25/54 × 25 = 700/1350 - Likewise, for the 2nd fraction, since 25 × 54 = 1350,
20/25 = 20 × 54/25 × 54 = 1080/1350 - Add the two like fractions:
700/1350 + 1080/1350 = 700 + 1080/1350 = 1780/1350 - 1780/1350 simplified gives 178/135
- So, 28/54 + 20/25 = 178/135
In mixed form: 143/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/54+20/25 28/54+40/25 28/54+20/50 84/54+20/25 28/54+60/25 28/54+20/75