Add 42/8 and 40/18
1st number: 5 2/8, 2nd number: 2 4/18
42/8 + 40/18 is 269/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
42/8 = 42 × 9/8 × 9 = 378/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
40/18 = 40 × 4/18 × 4 = 160/72 - Add the two like fractions:
378/72 + 160/72 = 378 + 160/72 = 538/72 - 538/72 simplified gives 269/36
- So, 42/8 + 40/18 = 269/36
In mixed form: 717/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+40/18 42/8+80/18 42/16+40/18 42/8+40/36 42/24+40/18 42/8+40/54 42/40+40/18 42/8+40/90 42/56+40/18