Add 42/20 and 63/18
1st number: 2 2/20, 2nd number: 3 9/18
42/20 + 63/18 is 28/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
42/20 = 42 × 9/20 × 9 = 378/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
63/18 = 63 × 10/18 × 10 = 630/180 - Add the two like fractions:
378/180 + 630/180 = 378 + 630/180 = 1008/180 - 1008/180 simplified gives 28/5
- So, 42/20 + 63/18 = 28/5
In mixed form: 53/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+63/18 42/40+63/18 42/20+63/36 42/60+63/18 42/20+63/54 42/20+63/90