Add 35/20 and 15/45
1st number: 1 15/20, 2nd number: 15/45
35/20 + 15/45 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
35/20 = 35 × 9/20 × 9 = 315/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
15/45 = 15 × 4/45 × 4 = 60/180 - Add the two like fractions:
315/180 + 60/180 = 315 + 60/180 = 375/180 - 375/180 simplified gives 25/12
- So, 35/20 + 15/45 = 25/12
In mixed form: 21/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20+15/45 35/20+30/45 35/40+15/45 35/20+15/90 35/60+15/45 35/20+75/45