Add 30/80 and 2/5
30/80 + 2/5 is 31/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
30/80 = 30 × 1/80 × 1 = 30/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
2/5 = 2 × 16/5 × 16 = 32/80 - Add the two like fractions:
30/80 + 32/80 = 30 + 32/80 = 62/80 - 62/80 simplified gives 31/40
- So, 30/80 + 2/5 = 31/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80+2/5 30/80+4/5 30/80+2/10 90/80+2/5 30/80+6/5 30/80+2/15 30/80+10/5 30/80+2/25 30/80+14/5 30/80+2/35