Add 63/21 and 45/10
1st number: 3 0/21, 2nd number: 4 5/10
63/21 + 45/10 is 15/2.
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,
63/21 = 63 × 10/21 × 10 = 630/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
45/10 = 45 × 21/10 × 21 = 945/210 - Add the two like fractions:
630/210 + 945/210 = 630 + 945/210 = 1575/210 - 1575/210 simplified gives 15/2
- So, 63/21 + 45/10 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21+90/10 63/42+45/10 63/21+45/20 63/21+45/30 63/21+45/50 63/21+45/70