Add 15/80 and 35/40
15/80 + 35/40 is 17/16.
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,
35/40 = 35 × 2/40 × 2 = 70/80 - Add the two like fractions:
15/80 + 70/80 = 15 + 70/80 = 85/80 - 85/80 simplified gives 17/16
- So, 15/80 + 35/40 = 17/16
In mixed form: 11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80+35/40 15/80+70/40 15/80+35/80 45/80+35/40 75/80+35/40