Add 20/75 and 70/18
1st number: 20/75, 2nd number: 3 16/18
20/75 + 70/18 is 187/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
20/75 = 20 × 6/75 × 6 = 120/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
70/18 = 70 × 25/18 × 25 = 1750/450 - Add the two like fractions:
120/450 + 1750/450 = 120 + 1750/450 = 1870/450 - 1870/450 simplified gives 187/45
- So, 20/75 + 70/18 = 187/45
In mixed form: 47/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/75+70/18 20/75+70/36 60/75+70/18 20/75+70/54 20/75+70/90