Add 21/45 and 1/54
21/45 + 1/54 is 131/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 45 × 6 = 270,
21/45 = 21 × 6/45 × 6 = 126/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
1/54 = 1 × 5/54 × 5 = 5/270 - Add the two like fractions:
126/270 + 5/270 = 126 + 5/270 = 131/270 - So, 21/45 + 1/54 = 131/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45+1/54 21/45+2/54 21/90+1/54 63/45+1/54 21/45+3/54 21/45+5/54 21/45+7/54