Add 45/20 and 42/25
1st number: 2 5/20, 2nd number: 1 17/25
45/20 + 42/25 is 393/100.
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,
45/20 = 45 × 5/20 × 5 = 225/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
42/25 = 42 × 4/25 × 4 = 168/100 - Add the two like fractions:
225/100 + 168/100 = 225 + 168/100 = 393/100 - So, 45/20 + 42/25 = 393/100
In mixed form: 393/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+42/25 45/20+84/25 45/40+42/25 45/20+42/50 45/60+42/25 45/20+42/75