Add 5/20 and 45/30
1st number: 5/20, 2nd number: 1 15/30
5/20 + 45/30 is 7/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
5/20 = 5 × 3/20 × 3 = 15/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
45/30 = 45 × 2/30 × 2 = 90/60 - Add the two like fractions:
15/60 + 90/60 = 15 + 90/60 = 105/60 - 105/60 simplified gives 7/4
- So, 5/20 + 45/30 = 7/4
In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+45/30 5/20+90/30 5/40+45/30 5/20+45/60 15/20+45/30 5/60+45/30 5/20+45/90 25/20+45/30 35/20+45/30