Add 70/18 and 20/75
1st number: 3 16/18, 2nd number: 20/75
70/18 + 20/75 is 187/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 75 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
70/18 = 70 × 25/18 × 25 = 1750/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
20/75 = 20 × 6/75 × 6 = 120/450 - Add the two like fractions:
1750/450 + 120/450 = 1750 + 120/450 = 1870/450 - 1870/450 simplified gives 187/45
- So, 70/18 + 20/75 = 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: 70/18+40/75 70/36+20/75 70/18+60/75 70/54+20/75 70/90+20/75