Add 70/25 and 20/72
1st number: 2 20/25, 2nd number: 20/72
70/25 + 20/72 is 277/90.
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,
70/25 = 70 × 72/25 × 72 = 5040/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
20/72 = 20 × 25/72 × 25 = 500/1800 - Add the two like fractions:
5040/1800 + 500/1800 = 5040 + 500/1800 = 5540/1800 - 5540/1800 simplified gives 277/90
- So, 70/25 + 20/72 = 277/90
In mixed form: 37/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/25+40/72 70/50+20/72 70/25+60/72 70/75+20/72