Add 28/30 and 63/54
1st number: 28/30, 2nd number: 1 9/54
28/30 + 63/54 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
28/30 = 28 × 9/30 × 9 = 252/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
63/54 = 63 × 5/54 × 5 = 315/270 - Add the two like fractions:
252/270 + 315/270 = 252 + 315/270 = 567/270 - 567/270 simplified gives 21/10
- So, 28/30 + 63/54 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+63/54 28/60+63/54 84/30+63/54 28/90+63/54