Add 45/20 and 42/15
1st number: 2 5/20, 2nd number: 2 12/15
45/20 + 42/15 is 101/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
45/20 = 45 × 3/20 × 3 = 135/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
42/15 = 42 × 4/15 × 4 = 168/60 - Add the two like fractions:
135/60 + 168/60 = 135 + 168/60 = 303/60 - 303/60 simplified gives 101/20
- So, 45/20 + 42/15 = 101/20
In mixed form: 51/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+42/15 45/20+84/15 45/40+42/15 45/20+42/30 45/60+42/15 45/20+42/45 45/20+42/75