Add 80/60 and 30/8
1st number: 1 20/60, 2nd number: 3 6/8
80/60 + 30/8 is 61/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
80/60 = 80 × 2/60 × 2 = 160/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
30/8 = 30 × 15/8 × 15 = 450/120 - Add the two like fractions:
160/120 + 450/120 = 160 + 450/120 = 610/120 - 610/120 simplified gives 61/12
- So, 80/60 + 30/8 = 61/12
In mixed form: 51/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+60/8 80/60+30/16 80/60+90/8 80/60+30/24 80/60+30/40 80/60+30/56