Add 7/9 and 42/40
1st number: 7/9, 2nd number: 1 2/40
7/9 + 42/40 is 329/180.
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,
7/9 = 7 × 40/9 × 40 = 280/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
42/40 = 42 × 9/40 × 9 = 378/360 - Add the two like fractions:
280/360 + 378/360 = 280 + 378/360 = 658/360 - 658/360 simplified gives 329/180
- So, 7/9 + 42/40 = 329/180
In mixed form: 1149/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9+42/40 7/9+84/40 7/18+42/40 7/9+42/80 21/9+42/40 7/27+42/40 35/9+42/40 7/45+42/40 49/9+42/40 7/63+42/40