Add 15/40 and 16/9
1st number: 15/40, 2nd number: 1 7/9
15/40 + 16/9 is 155/72.
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,
15/40 = 15 × 9/40 × 9 = 135/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
16/9 = 16 × 40/9 × 40 = 640/360 - Add the two like fractions:
135/360 + 640/360 = 135 + 640/360 = 775/360 - 775/360 simplified gives 155/72
- So, 15/40 + 16/9 = 155/72
In mixed form: 211/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40+16/9 15/40+32/9 15/80+16/9 15/40+16/18 45/40+16/9 15/40+48/9 15/40+16/27 75/40+16/9 15/40+80/9 15/40+16/45 15/40+16/63