Add 21/5 and 84/54
1st number: 4 1/5, 2nd number: 1 30/54
21/5 + 84/54 is 259/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
21/5 = 21 × 54/5 × 54 = 1134/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
84/54 = 84 × 5/54 × 5 = 420/270 - Add the two like fractions:
1134/270 + 420/270 = 1134 + 420/270 = 1554/270 - 1554/270 simplified gives 259/45
- So, 21/5 + 84/54 = 259/45
In mixed form: 534/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+84/54 21/10+84/54 63/5+84/54 21/15+84/54 21/25+84/54 21/35+84/54