Add 28/30 and 63/18
1st number: 28/30, 2nd number: 3 9/18
28/30 + 63/18 is 133/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
28/30 = 28 × 3/30 × 3 = 84/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
63/18 = 63 × 5/18 × 5 = 315/90 - Add the two like fractions:
84/90 + 315/90 = 84 + 315/90 = 399/90 - 399/90 simplified gives 133/30
- So, 28/30 + 63/18 = 133/30
In mixed form: 413/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+63/18 28/60+63/18 28/30+63/36 84/30+63/18 28/90+63/18 28/30+63/54 28/30+63/90