Add 40/7 and 30/9
1st number: 5 5/7, 2nd number: 3 3/9
40/7 + 30/9 is 190/21.
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,
30/9 = 30 × 7/9 × 7 = 210/63 - Add the two like fractions:
360/63 + 210/63 = 360 + 210/63 = 570/63 - 570/63 simplified gives 190/21
- So, 40/7 + 30/9 = 190/21
In mixed form: 91/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+30/9 40/7+60/9 40/14+30/9 40/7+30/18 40/7+90/9 40/21+30/9 40/7+30/27 40/35+30/9 40/7+30/45 40/49+30/9 40/7+30/63