Add 28/54 and 70/72
28/54 + 70/72 is 161/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 72 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
28/54 = 28 × 4/54 × 4 = 112/216 - Likewise, for the 2nd fraction, since 72 × 3 = 216,
70/72 = 70 × 3/72 × 3 = 210/216 - Add the two like fractions:
112/216 + 210/216 = 112 + 210/216 = 322/216 - 322/216 simplified gives 161/108
- So, 28/54 + 70/72 = 161/108
In mixed form: 153/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/54+70/72 84/54+70/72