Add 20/45 and 70/25
1st number: 20/45, 2nd number: 2 20/25
20/45 + 70/25 is 146/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 25 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 45 × 5 = 225,
20/45 = 20 × 5/45 × 5 = 100/225 - Likewise, for the 2nd fraction, since 25 × 9 = 225,
70/25 = 70 × 9/25 × 9 = 630/225 - Add the two like fractions:
100/225 + 630/225 = 100 + 630/225 = 730/225 - 730/225 simplified gives 146/45
- So, 20/45 + 70/25 = 146/45
In mixed form: 311/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+70/25 20/90+70/25 20/45+70/50 60/45+70/25 20/45+70/75