Add 30/18 and 5/8
1st number: 1 12/18, 2nd number: 5/8
30/18 + 5/8 is 55/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
30/18 = 30 × 4/18 × 4 = 120/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
5/8 = 5 × 9/8 × 9 = 45/72 - Add the two like fractions:
120/72 + 45/72 = 120 + 45/72 = 165/72 - 165/72 simplified gives 55/24
- So, 30/18 + 5/8 = 55/24
In mixed form: 27/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+5/8 30/18+10/8 30/36+5/8 30/18+5/16 90/18+5/8 30/18+15/8 30/54+5/8 30/18+5/24 30/18+25/8 30/90+5/8 30/18+5/40 30/18+35/8 30/18+5/56