Add 28/75 and 21/70
28/75 + 21/70 is 101/150.
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,
28/75 = 28 × 14/75 × 14 = 392/1050 - Likewise, for the 2nd fraction, since 70 × 15 = 1050,
21/70 = 21 × 15/70 × 15 = 315/1050 - Add the two like fractions:
392/1050 + 315/1050 = 392 + 315/1050 = 707/1050 - 707/1050 simplified gives 101/150
- So, 28/75 + 21/70 = 101/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/75+21/70 28/75+42/70 84/75+21/70 28/75+63/70