Add 21/4 and 6/80
1st number: 5 1/4, 2nd number: 6/80
21/4 + 6/80 is 213/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
21/4 = 21 × 20/4 × 20 = 420/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
6/80 = 6 × 1/80 × 1 = 6/80 - Add the two like fractions:
420/80 + 6/80 = 420 + 6/80 = 426/80 - 426/80 simplified gives 213/40
- So, 21/4 + 6/80 = 213/40
In mixed form: 513/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+6/80 21/4+12/80 21/8+6/80 63/4+6/80 21/4+18/80 21/12+6/80 21/4+30/80 21/20+6/80 21/4+42/80 21/28+6/80