Add 28/18 and 30/8
1st number: 1 10/18, 2nd number: 3 6/8
28/18 + 30/8 is 191/36.
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,
28/18 = 28 × 4/18 × 4 = 112/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
30/8 = 30 × 9/8 × 9 = 270/72 - Add the two like fractions:
112/72 + 270/72 = 112 + 270/72 = 382/72 - 382/72 simplified gives 191/36
- So, 28/18 + 30/8 = 191/36
In mixed form: 511/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18+30/8 28/18+60/8 28/36+30/8 28/18+30/16 84/18+30/8 28/18+90/8 28/54+30/8 28/18+30/24 28/90+30/8 28/18+30/40 28/18+30/56