Add 10/5 and 1/21
1st number: 2 0/5, 2nd number: 1/21
10/5 + 1/21 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
10/5 = 10 × 21/5 × 21 = 210/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
1/21 = 1 × 5/21 × 5 = 5/105 - Add the two like fractions:
210/105 + 5/105 = 210 + 5/105 = 215/105 - 215/105 simplified gives 43/21
- So, 10/5 + 1/21 = 43/21
In mixed form: 21/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/5+1/21 10/5+2/21 10/5+1/42 30/5+1/21 10/5+3/21 10/15+1/21 10/5+1/63 50/5+1/21 10/5+5/21 10/25+1/21 70/5+1/21 10/5+7/21 10/35+1/21