Add 21/10 and 7/80
1st number: 2 1/10, 2nd number: 7/80
21/10 + 7/80 is 35/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
21/10 = 21 × 8/10 × 8 = 168/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
7/80 = 7 × 1/80 × 1 = 7/80 - Add the two like fractions:
168/80 + 7/80 = 168 + 7/80 = 175/80 - 175/80 simplified gives 35/16
- So, 21/10 + 7/80 = 35/16
In mixed form: 23/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+7/80 21/10+14/80 21/20+7/80 63/10+7/80 21/10+21/80 21/30+7/80 21/10+35/80 21/50+7/80 21/10+49/80 21/70+7/80