Add 21/5 and 6/80
1st number: 4 1/5, 2nd number: 6/80
21/5 + 6/80 is 171/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
21/5 = 21 × 16/5 × 16 = 336/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
6/80 = 6 × 1/80 × 1 = 6/80 - Add the two like fractions:
336/80 + 6/80 = 336 + 6/80 = 342/80 - 342/80 simplified gives 171/40
- So, 21/5 + 6/80 = 171/40
In mixed form: 411/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+6/80 21/5+12/80 21/10+6/80 63/5+6/80 21/5+18/80 21/15+6/80 21/5+30/80 21/25+6/80 21/5+42/80 21/35+6/80