Add 7/20 and 42/25
1st number: 7/20, 2nd number: 1 17/25
7/20 + 42/25 is 203/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
7/20 = 7 × 5/20 × 5 = 35/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
42/25 = 42 × 4/25 × 4 = 168/100 - Add the two like fractions:
35/100 + 168/100 = 35 + 168/100 = 203/100 - So, 7/20 + 42/25 = 203/100
In mixed form: 23/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20+42/25 7/20+84/25 7/40+42/25 7/20+42/50 21/20+42/25 7/60+42/25 7/20+42/75 35/20+42/25 49/20+42/25