Add 4/54 and 21/90
4/54 + 21/90 is 83/270.
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,
4/54 = 4 × 5/54 × 5 = 20/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
21/90 = 21 × 3/90 × 3 = 63/270 - Add the two like fractions:
20/270 + 63/270 = 20 + 63/270 = 83/270 - So, 4/54 + 21/90 = 83/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/54+21/90 4/54+42/90 12/54+21/90 4/54+63/90 20/54+21/90 28/54+21/90