Add 75/21 and 63/10
1st number: 3 12/21, 2nd number: 6 3/10
75/21 + 63/10 is 691/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
75/21 = 75 × 10/21 × 10 = 750/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
63/10 = 63 × 21/10 × 21 = 1323/210 - Add the two like fractions:
750/210 + 1323/210 = 750 + 1323/210 = 2073/210 - 2073/210 simplified gives 691/70
- So, 75/21 + 63/10 = 691/70
In mixed form: 961/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/42+63/10 75/21+63/20 75/63+63/10 75/21+63/30 75/21+63/50 75/21+63/70