Add 8/12 and 21/80
8/12 + 21/80 is 223/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
8/12 = 8 × 20/12 × 20 = 160/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Add the two like fractions:
160/240 + 63/240 = 160 + 63/240 = 223/240 - So, 8/12 + 21/80 = 223/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12+21/80 8/12+42/80 8/24+21/80 24/12+21/80 8/12+63/80 8/36+21/80 40/12+21/80 8/60+21/80 56/12+21/80 8/84+21/80