Add 21/35 and 6/80
21/35 + 6/80 is 27/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 35 × 16 = 560,
21/35 = 21 × 16/35 × 16 = 336/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
6/80 = 6 × 7/80 × 7 = 42/560 - Add the two like fractions:
336/560 + 42/560 = 336 + 42/560 = 378/560 - 378/560 simplified gives 27/40
- So, 21/35 + 6/80 = 27/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35+6/80 21/35+12/80 21/70+6/80 63/35+6/80 21/35+18/80 21/35+30/80 21/35+42/80