Add 80/25 and 20/72
1st number: 3 5/25, 2nd number: 20/72
80/25 + 20/72 is 313/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 25 × 72 = 1800,
80/25 = 80 × 72/25 × 72 = 5760/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
20/72 = 20 × 25/72 × 25 = 500/1800 - Add the two like fractions:
5760/1800 + 500/1800 = 5760 + 500/1800 = 6260/1800 - 6260/1800 simplified gives 313/90
- So, 80/25 + 20/72 = 313/90
In mixed form: 343/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/25+40/72 80/50+20/72 80/25+60/72 80/75+20/72