Add 30/90 and 25/18
1st number: 30/90, 2nd number: 1 7/18
30/90 + 25/18 is 31/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
30/90 = 30 × 1/90 × 1 = 30/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
25/18 = 25 × 5/18 × 5 = 125/90 - Add the two like fractions:
30/90 + 125/90 = 30 + 125/90 = 155/90 - 155/90 simplified gives 31/18
- So, 30/90 + 25/18 = 31/18
In mixed form: 113/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+25/18 30/90+50/18 30/90+25/36 30/90+75/18 30/90+25/54 30/90+25/90