Add 28/30 and 25/8
1st number: 28/30, 2nd number: 3 1/8
28/30 + 25/8 is 487/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
28/30 = 28 × 4/30 × 4 = 112/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
25/8 = 25 × 15/8 × 15 = 375/120 - Add the two like fractions:
112/120 + 375/120 = 112 + 375/120 = 487/120 - So, 28/30 + 25/8 = 487/120
In mixed form: 47/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+25/8 28/30+50/8 28/60+25/8 28/30+25/16 84/30+25/8 28/30+75/8 28/90+25/8 28/30+25/24 28/30+25/40 28/30+25/56