Add 42/18 and 9/8
1st number: 2 6/18, 2nd number: 1 1/8
42/18 + 9/8 is 83/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
42/18 = 42 × 4/18 × 4 = 168/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
9/8 = 9 × 9/8 × 9 = 81/72 - Add the two like fractions:
168/72 + 81/72 = 168 + 81/72 = 249/72 - 249/72 simplified gives 83/24
- So, 42/18 + 9/8 = 83/24
In mixed form: 311/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+9/8 42/18+18/8 42/36+9/8 42/18+9/16 42/18+27/8 42/54+9/8 42/18+9/24 42/18+45/8 42/90+9/8 42/18+9/40 42/18+63/8 42/18+9/56