Add 45/10 and 9/21
1st number: 4 5/10, 2nd number: 9/21
45/10 + 9/21 is 69/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
45/10 = 45 × 21/10 × 21 = 945/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
9/21 = 9 × 10/21 × 10 = 90/210 - Add the two like fractions:
945/210 + 90/210 = 945 + 90/210 = 1035/210 - 1035/210 simplified gives 69/14
- So, 45/10 + 9/21 = 69/14
In mixed form: 413/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10+9/21 45/10+18/21 45/20+9/21 45/10+9/42 45/10+27/21 45/30+9/21 45/10+9/63 45/10+45/21 45/50+9/21 45/10+63/21 45/70+9/21