Add 40/5 and 21/40
1st number: 8 0/5, 2nd number: 21/40
40/5 + 21/40 is 341/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
40/5 = 40 × 8/5 × 8 = 320/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Add the two like fractions:
320/40 + 21/40 = 320 + 21/40 = 341/40 - So, 40/5 + 21/40 = 341/40
In mixed form: 821/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5+21/40 40/5+42/40 40/10+21/40 40/5+21/80 40/5+63/40 40/15+21/40 40/25+21/40 40/35+21/40