Add 3/80 and 72/9
1st number: 3/80, 2nd number: 8 0/9
3/80 + 72/9 is 643/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
3/80 = 3 × 9/80 × 9 = 27/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
72/9 = 72 × 80/9 × 80 = 5760/720 - Add the two like fractions:
27/720 + 5760/720 = 27 + 5760/720 = 5787/720 - 5787/720 simplified gives 643/80
- So, 3/80 + 72/9 = 643/80
In mixed form: 83/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/80+72/9 3/80+72/18 9/80+72/9 3/80+72/27 15/80+72/9 3/80+72/45 21/80+72/9 3/80+72/63