Add 10/30 and 63/21
1st number: 10/30, 2nd number: 3 0/21
10/30 + 63/21 is 10/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
10/30 = 10 × 7/30 × 7 = 70/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
63/21 = 63 × 10/21 × 10 = 630/210 - Add the two like fractions:
70/210 + 630/210 = 70 + 630/210 = 700/210 - 700/210 simplified gives 10/3
- So, 10/30 + 63/21 = 10/3
In mixed form: 31/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30+63/21 10/60+63/21 10/30+63/42 10/90+63/21 50/30+63/21 70/30+63/21