Add 70/42 and 70/50
1st number: 1 28/42, 2nd number: 1 20/50
70/42 + 70/50 is 46/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
70/42 = 70 × 25/42 × 25 = 1750/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
70/50 = 70 × 21/50 × 21 = 1470/1050 - Add the two like fractions:
1750/1050 + 1470/1050 = 1750 + 1470/1050 = 3220/1050 - 3220/1050 simplified gives 46/15
- So, 70/42 + 70/50 = 46/15
In mixed form: 31/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84+70/50