Add 9/21 and 70/50
1st number: 9/21, 2nd number: 1 20/50
9/21 + 70/50 is 64/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
9/21 = 9 × 50/21 × 50 = 450/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
70/50 = 70 × 21/50 × 21 = 1470/1050 - Add the two like fractions:
450/1050 + 1470/1050 = 450 + 1470/1050 = 1920/1050 - 1920/1050 simplified gives 64/35
- So, 9/21 + 70/50 = 64/35
In mixed form: 129/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+70/50 9/42+70/50 27/21+70/50 9/63+70/50 45/21+70/50 63/21+70/50