Add 21/20 and 6/40
1st number: 1 1/20, 2nd number: 6/40
21/20 + 6/40 is 6/5.
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,
21/20 = 21 × 2/20 × 2 = 42/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
6/40 = 6 × 1/40 × 1 = 6/40 - Add the two like fractions:
42/40 + 6/40 = 42 + 6/40 = 48/40 - 48/40 simplified gives 6/5
- So, 21/20 + 6/40 = 6/5
In mixed form: 11/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20+6/40 21/20+12/40 21/40+6/40 21/20+6/80 63/20+6/40 21/20+18/40 21/60+6/40 21/20+30/40 21/20+42/40