Add 42/5 and 7/18
1st number: 8 2/5, 2nd number: 7/18
42/5 + 7/18 is 791/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
42/5 = 42 × 18/5 × 18 = 756/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
7/18 = 7 × 5/18 × 5 = 35/90 - Add the two like fractions:
756/90 + 35/90 = 756 + 35/90 = 791/90 - So, 42/5 + 7/18 = 791/90
In mixed form: 871/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+7/18 42/5+14/18 42/10+7/18 42/5+7/36 42/5+21/18 42/15+7/18 42/5+7/54 42/5+35/18 42/25+7/18 42/5+7/90 42/5+49/18 42/35+7/18