Add 20/45 and 4/20
20/45 + 4/20 is 29/45.
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,
20/45 = 20 × 4/45 × 4 = 80/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Add the two like fractions:
80/180 + 36/180 = 80 + 36/180 = 116/180 - 116/180 simplified gives 29/45
- So, 20/45 + 4/20 = 29/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+4/20 20/45+8/20 20/90+4/20 20/45+4/40 60/45+4/20 20/45+12/20 20/45+4/60 20/45+28/20