Add 1/20 and 9/45
1/20 + 9/45 is 1/4.
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,
1/20 = 1 × 9/20 × 9 = 9/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
9/45 = 9 × 4/45 × 4 = 36/180 - Add the two like fractions:
9/180 + 36/180 = 9 + 36/180 = 45/180 - 45/180 simplified gives 1/4
- So, 1/20 + 9/45 = 1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+9/45 1/20+18/45 1/40+9/45 1/20+9/90 3/20+9/45 1/20+27/45 1/60+9/45 5/20+9/45 7/20+9/45 1/20+63/45