Add 8/2 and 12/21
1st number: 4 0/2, 2nd number: 12/21
8/2 + 12/21 is 32/7.
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,
12/21 = 12 × 2/21 × 2 = 24/42 - Add the two like fractions:
168/42 + 24/42 = 168 + 24/42 = 192/42 - 192/42 simplified gives 32/7
- So, 8/2 + 12/21 = 32/7
In mixed form: 44/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/2+12/21 8/2+24/21 8/4+12/21 8/2+12/42 24/2+12/21 8/2+36/21 8/6+12/21 8/2+12/63 40/2+12/21 8/2+60/21 8/10+12/21 56/2+12/21 8/2+84/21 8/14+12/21