Add 9/40 and 80/9
1st number: 9/40, 2nd number: 8 8/9
9/40 + 80/9 is 3281/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
9/40 = 9 × 9/40 × 9 = 81/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
80/9 = 80 × 40/9 × 40 = 3200/360 - Add the two like fractions:
81/360 + 3200/360 = 81 + 3200/360 = 3281/360 - So, 9/40 + 80/9 = 3281/360
In mixed form: 941/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40+80/9 9/80+80/9 9/40+80/18 27/40+80/9 9/40+80/27 45/40+80/9 9/40+80/45 63/40+80/9 9/40+80/63