Add 30/90 and 18/24
30/90 + 18/24 is 13/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 24 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
30/90 = 30 × 4/90 × 4 = 120/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
18/24 = 18 × 15/24 × 15 = 270/360 - Add the two like fractions:
120/360 + 270/360 = 120 + 270/360 = 390/360 - 390/360 simplified gives 13/12
- So, 30/90 + 18/24 = 13/12
In mixed form: 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+18/24 30/90+36/24 30/90+18/48 30/90+54/24 30/90+18/72 30/90+90/24