Add 21/3 and 8/45
1st number: 7 0/3, 2nd number: 8/45
21/3 + 8/45 is 323/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 3 × 15 = 45,
21/3 = 21 × 15/3 × 15 = 315/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
8/45 = 8 × 1/45 × 1 = 8/45 - Add the two like fractions:
315/45 + 8/45 = 315 + 8/45 = 323/45 - So, 21/3 + 8/45 = 323/45
In mixed form: 78/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+8/45 21/3+16/45 21/6+8/45 21/3+8/90 63/3+8/45 21/3+24/45 21/9+8/45 21/3+40/45 21/15+8/45 21/3+56/45