Add 42/20 and 5/90
1st number: 2 2/20, 2nd number: 5/90
42/20 + 5/90 is 97/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 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 90 × 2 = 180,
5/90 = 5 × 2/90 × 2 = 10/180 - Add the two like fractions:
378/180 + 10/180 = 378 + 10/180 = 388/180 - 388/180 simplified gives 97/45
- So, 42/20 + 5/90 = 97/45
In mixed form: 27/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+5/90 42/20+10/90 42/40+5/90 42/20+15/90 42/60+5/90 42/20+25/90 42/20+35/90