Add 3/9 and 32/40
3/9 + 32/40 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
3/9 = 3 × 40/9 × 40 = 120/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
32/40 = 32 × 9/40 × 9 = 288/360 - Add the two like fractions:
120/360 + 288/360 = 120 + 288/360 = 408/360 - 408/360 simplified gives 17/15
- So, 3/9 + 32/40 = 17/15
In mixed form: 12/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9+32/40 3/9+64/40 3/18+32/40 3/9+32/80 3/9+96/40 3/27+32/40 15/9+32/40 3/45+32/40 21/9+32/40 3/63+32/40