Add 30/72 and 42/25
1st number: 30/72, 2nd number: 1 17/25
30/72 + 42/25 is 629/300.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 25 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
30/72 = 30 × 25/72 × 25 = 750/1800 - Likewise, for the 2nd fraction, since 25 × 72 = 1800,
42/25 = 42 × 72/25 × 72 = 3024/1800 - Add the two like fractions:
750/1800 + 3024/1800 = 750 + 3024/1800 = 3774/1800 - 3774/1800 simplified gives 629/300
- So, 30/72 + 42/25 = 629/300
In mixed form: 229/300
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/72+42/25 30/72+84/25 30/72+42/50 90/72+42/25 30/72+42/75