Add 30/45 and 3/20
30/45 + 3/20 is 49/60.
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,
30/45 = 30 × 4/45 × 4 = 120/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
3/20 = 3 × 9/20 × 9 = 27/180 - Add the two like fractions:
120/180 + 27/180 = 120 + 27/180 = 147/180 - 147/180 simplified gives 49/60
- So, 30/45 + 3/20 = 49/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45+3/20 30/45+6/20 30/90+3/20 30/45+3/40 90/45+3/20 30/45+9/20 30/45+3/60 30/45+15/20 30/45+21/20