Add 45/10 and 1/21
1st number: 4 5/10, 2nd number: 1/21
45/10 + 1/21 is 191/42.
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,
1/21 = 1 × 10/21 × 10 = 10/210 - Add the two like fractions:
945/210 + 10/210 = 945 + 10/210 = 955/210 - 955/210 simplified gives 191/42
- So, 45/10 + 1/21 = 191/42
In mixed form: 423/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10+1/21 45/10+2/21 45/20+1/21 45/10+1/42 45/10+3/21 45/30+1/21 45/10+1/63 45/10+5/21 45/50+1/21 45/10+7/21 45/70+1/21