Add 8/2 and 18/21
1st number: 4 0/2, 2nd number: 18/21
8/2 + 18/21 is 34/7.
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,
8/2 = 8 × 21/2 × 21 = 168/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Add the two like fractions:
168/42 + 36/42 = 168 + 36/42 = 204/42 - 204/42 simplified gives 34/7
- So, 8/2 + 18/21 = 34/7
In mixed form: 46/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/2+18/21 8/2+36/21 8/4+18/21 8/2+18/42 24/2+18/21 8/2+54/21 8/6+18/21 8/2+18/63 40/2+18/21 8/2+90/21 8/10+18/21 56/2+18/21 8/14+18/21