Add 4/2 and 15/21
1st number: 2 0/2, 2nd number: 15/21
4/2 + 15/21 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
4/2 = 4 × 21/2 × 21 = 84/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
15/21 = 15 × 2/21 × 2 = 30/42 - Add the two like fractions:
84/42 + 30/42 = 84 + 30/42 = 114/42 - 114/42 simplified gives 19/7
- So, 4/2 + 15/21 = 19/7
In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/2+15/21 4/2+30/21 4/2+15/42 12/2+15/21 4/2+45/21 4/6+15/21 4/2+15/63 20/2+15/21 4/2+75/21 4/10+15/21 28/2+15/21 4/14+15/21