Add 15/20 and 8/16
15/20 + 8/16 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
15/20 = 15 × 4/20 × 4 = 60/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
8/16 = 8 × 5/16 × 5 = 40/80 - Add the two like fractions:
60/80 + 40/80 = 60 + 40/80 = 100/80 - 100/80 simplified gives 5/4
- So, 15/20 + 8/16 = 5/4
In mixed form: 11/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20+8/16 15/40+8/16 15/20+8/32 45/20+8/16 15/20+24/16 15/60+8/16 15/20+8/48 75/20+8/16 15/20+40/16 15/20+8/80 15/20+56/16