Add 20/30 and 25/8
1st number: 20/30, 2nd number: 3 1/8
20/30 + 25/8 is 91/24.
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,
20/30 = 20 × 4/30 × 4 = 80/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
25/8 = 25 × 15/8 × 15 = 375/120 - Add the two like fractions:
80/120 + 375/120 = 80 + 375/120 = 455/120 - 455/120 simplified gives 91/24
- So, 20/30 + 25/8 = 91/24
In mixed form: 319/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30+25/8 20/30+50/8 20/60+25/8 20/30+25/16 60/30+25/8 20/30+75/8 20/90+25/8 20/30+25/24 20/30+25/40 20/30+25/56