Add 1/21 and 10/5
1st number: 1/21, 2nd number: 2 0/5
1/21 + 10/5 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
1/21 = 1 × 5/21 × 5 = 5/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
10/5 = 10 × 21/5 × 21 = 210/105 - Add the two like fractions:
5/105 + 210/105 = 5 + 210/105 = 215/105 - 215/105 simplified gives 43/21
- So, 1/21 + 10/5 = 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: 2/21+10/5 1/21+20/5 1/42+10/5 3/21+10/5 1/21+30/5 1/63+10/5 1/21+10/15 5/21+10/5 1/21+50/5 1/21+10/25 7/21+10/5 1/21+70/5 1/21+10/35