Add 20/80 and 16/9
1st number: 20/80, 2nd number: 1 7/9
20/80 + 16/9 is 73/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
16/9 = 16 × 80/9 × 80 = 1280/720 - Add the two like fractions:
180/720 + 1280/720 = 180 + 1280/720 = 1460/720 - 1460/720 simplified gives 73/36
- So, 20/80 + 16/9 = 73/36
In mixed form: 21/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80+16/9 20/80+32/9 20/80+16/18 60/80+16/9 20/80+48/9 20/80+16/27 20/80+80/9 20/80+16/45 20/80+16/63