Add 12/35 and 21/8
1st number: 12/35, 2nd number: 2 5/8
12/35 + 21/8 is 831/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 35 × 8 = 280,
12/35 = 12 × 8/35 × 8 = 96/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
21/8 = 21 × 35/8 × 35 = 735/280 - Add the two like fractions:
96/280 + 735/280 = 96 + 735/280 = 831/280 - So, 12/35 + 21/8 = 831/280
In mixed form: 2271/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/35+21/8 12/35+42/8 12/70+21/8 12/35+21/16 36/35+21/8 12/35+63/8 12/35+21/24 60/35+21/8 12/35+21/40 84/35+21/8 12/35+21/56