Add 9/20 and 25/40
9/20 + 25/40 is 43/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
9/20 = 9 × 2/20 × 2 = 18/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
25/40 = 25 × 1/40 × 1 = 25/40 - Add the two like fractions:
18/40 + 25/40 = 18 + 25/40 = 43/40 - So, 9/20 + 25/40 = 43/40
In mixed form: 13/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+25/40 9/20+50/40 9/40+25/40 9/20+25/80 27/20+25/40 9/20+75/40 9/60+25/40 45/20+25/40 63/20+25/40