Add 15/60 and 35/40
15/60 + 35/40 is 9/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
15/60 = 15 × 2/60 × 2 = 30/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
35/40 = 35 × 3/40 × 3 = 105/120 - Add the two like fractions:
30/120 + 105/120 = 30 + 105/120 = 135/120 - 135/120 simplified gives 9/8
- So, 15/60 + 35/40 = 9/8
In mixed form: 11/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/60+35/40 15/60+70/40 15/60+35/80 45/60+35/40 75/60+35/40