Add 18/20 and 3/45
18/20 + 3/45 is 29/30.
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,
18/20 = 18 × 9/20 × 9 = 162/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
3/45 = 3 × 4/45 × 4 = 12/180 - Add the two like fractions:
162/180 + 12/180 = 162 + 12/180 = 174/180 - 174/180 simplified gives 29/30
- So, 18/20 + 3/45 = 29/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20+3/45 18/20+6/45 18/40+3/45 18/20+3/90 54/20+3/45 18/20+9/45 18/60+3/45 90/20+3/45 18/20+15/45 18/20+21/45