Add 28/54 and 7/90
28/54 + 7/90 is 161/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
7/90 = 7 × 3/90 × 3 = 21/270 - Add the two like fractions:
140/270 + 21/270 = 140 + 21/270 = 161/270 - So, 28/54 + 7/90 = 161/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/54+7/90 28/54+14/90 84/54+7/90 28/54+21/90 28/54+35/90 28/54+49/90