Add 15/80 and 1/40
15/80 + 1/40 is 17/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
15/80 = 15 × 1/80 × 1 = 15/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
1/40 = 1 × 2/40 × 2 = 2/80 - Add the two like fractions:
15/80 + 2/80 = 15 + 2/80 = 17/80 - So, 15/80 + 1/40 = 17/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80+1/40 15/80+2/40 15/80+1/80 45/80+1/40 15/80+3/40 75/80+1/40 15/80+5/40 15/80+7/40