Add 21/9 and 8/80
1st number: 2 3/9, 2nd number: 8/80
21/9 + 8/80 is 73/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
21/9 = 21 × 80/9 × 80 = 1680/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
8/80 = 8 × 9/80 × 9 = 72/720 - Add the two like fractions:
1680/720 + 72/720 = 1680 + 72/720 = 1752/720 - 1752/720 simplified gives 73/30
- So, 21/9 + 8/80 = 73/30
In mixed form: 213/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9+8/80 21/9+16/80 21/18+8/80 63/9+8/80 21/9+24/80 21/27+8/80 21/9+40/80 21/45+8/80 21/9+56/80 21/63+8/80