Add 30/6 and 21/45
1st number: 5 0/6, 2nd number: 21/45
30/6 + 21/45 is 82/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
30/6 = 30 × 15/6 × 15 = 450/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Add the two like fractions:
450/90 + 42/90 = 450 + 42/90 = 492/90 - 492/90 simplified gives 82/15
- So, 30/6 + 21/45 = 82/15
In mixed form: 57/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/6+21/45 30/6+42/45 30/12+21/45 30/6+21/90 90/6+21/45 30/6+63/45 30/18+21/45 30/42+21/45