Add 20/45 and 16/36
20/45 + 16/36 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 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 36 × 5 = 180,
16/36 = 16 × 5/36 × 5 = 80/180 - Add the two like fractions:
80/180 + 80/180 = 80 + 80/180 = 160/180 - 160/180 simplified gives 8/9
- So, 20/45 + 16/36 = 8/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+16/36 20/45+32/36 20/90+16/36 20/45+16/72 60/45+16/36 20/45+48/36 20/45+80/36