Add 70/21 and 42/50
1st number: 3 7/21, 2nd number: 42/50
70/21 + 42/50 is 313/75.
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,
70/21 = 70 × 50/21 × 50 = 3500/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
42/50 = 42 × 21/50 × 21 = 882/1050 - Add the two like fractions:
3500/1050 + 882/1050 = 3500 + 882/1050 = 4382/1050 - 4382/1050 simplified gives 313/75
- So, 70/21 + 42/50 = 313/75
In mixed form: 413/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+84/50 70/42+42/50 70/63+42/50