Add 40/7 and 3/9
1st number: 5 5/7, 2nd number: 3/9
40/7 + 3/9 is 127/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
40/7 = 40 × 9/7 × 9 = 360/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
3/9 = 3 × 7/9 × 7 = 21/63 - Add the two like fractions:
360/63 + 21/63 = 360 + 21/63 = 381/63 - 381/63 simplified gives 127/21
- So, 40/7 + 3/9 = 127/21
In mixed form: 61/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+3/9 40/7+6/9 40/14+3/9 40/7+3/18 40/21+3/9 40/7+3/27 40/7+15/9 40/35+3/9 40/7+3/45 40/7+21/9 40/49+3/9 40/7+3/63