Add 16/45 and 42/20
1st number: 16/45, 2nd number: 2 2/20
16/45 + 42/20 is 221/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
16/45 = 16 × 4/45 × 4 = 64/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
42/20 = 42 × 9/20 × 9 = 378/180 - Add the two like fractions:
64/180 + 378/180 = 64 + 378/180 = 442/180 - 442/180 simplified gives 221/90
- So, 16/45 + 42/20 = 221/90
In mixed form: 241/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/45+42/20 16/45+84/20 16/90+42/20 16/45+42/40 48/45+42/20 16/45+42/60 80/45+42/20