Add 9/8 and 42/9
1st number: 1 1/8, 2nd number: 4 6/9
9/8 + 42/9 is 139/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
9/8 = 9 × 9/8 × 9 = 81/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
42/9 = 42 × 8/9 × 8 = 336/72 - Add the two like fractions:
81/72 + 336/72 = 81 + 336/72 = 417/72 - 417/72 simplified gives 139/24
- So, 9/8 + 42/9 = 139/24
In mixed form: 519/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/8+42/9 9/8+84/9 9/16+42/9 9/8+42/18 27/8+42/9 9/24+42/9 9/8+42/27 45/8+42/9 9/40+42/9 9/8+42/45 63/8+42/9 9/56+42/9 9/8+42/63