Add 9/4 and 20/40
1st number: 2 1/4, 2nd number: 20/40
9/4 + 20/40 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
9/4 = 9 × 10/4 × 10 = 90/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
20/40 = 20 × 1/40 × 1 = 20/40 - Add the two like fractions:
90/40 + 20/40 = 90 + 20/40 = 110/40 - 110/40 simplified gives 11/4
- So, 9/4 + 20/40 = 11/4
In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4+20/40 9/8+20/40 9/4+20/80 27/4+20/40 9/4+60/40 9/12+20/40 45/4+20/40 9/20+20/40 63/4+20/40 9/28+20/40