Add 20/72 and 25/9
1st number: 20/72, 2nd number: 2 7/9
20/72 + 25/9 is 55/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
25/9 = 25 × 8/9 × 8 = 200/72 - Add the two like fractions:
20/72 + 200/72 = 20 + 200/72 = 220/72 - 220/72 simplified gives 55/18
- So, 20/72 + 25/9 = 55/18
In mixed form: 31/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+25/9 20/72+50/9 20/72+25/18 60/72+25/9 20/72+75/9 20/72+25/27 20/72+25/45 20/72+25/63