Add 70/75 and 63/42
1st number: 70/75, 2nd number: 1 21/42
70/75 + 63/42 is 73/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
70/75 = 70 × 14/75 × 14 = 980/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
63/42 = 63 × 25/42 × 25 = 1575/1050 - Add the two like fractions:
980/1050 + 1575/1050 = 980 + 1575/1050 = 2555/1050 - 2555/1050 simplified gives 73/30
- So, 70/75 + 63/42 = 73/30
In mixed form: 213/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/75+63/84