Add 21/5 and 25/80
1st number: 4 1/5, 2nd number: 25/80
21/5 + 25/80 is 361/80.
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,
25/80 = 25 × 1/80 × 1 = 25/80 - Add the two like fractions:
336/80 + 25/80 = 336 + 25/80 = 361/80 - So, 21/5 + 25/80 = 361/80
In mixed form: 441/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+25/80 21/5+50/80 21/10+25/80 63/5+25/80 21/5+75/80 21/15+25/80 21/25+25/80 21/35+25/80