Add 10/75 and 21/70
10/75 + 21/70 is 13/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 70 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
10/75 = 10 × 14/75 × 14 = 140/1050 - Likewise, for the 2nd fraction, since 70 × 15 = 1050,
21/70 = 21 × 15/70 × 15 = 315/1050 - Add the two like fractions:
140/1050 + 315/1050 = 140 + 315/1050 = 455/1050 - 455/1050 simplified gives 13/30
- So, 10/75 + 21/70 = 13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/75+21/70 10/75+42/70 30/75+21/70 10/75+63/70 50/75+21/70 70/75+21/70