Add 12/21 and 8/10
12/21 + 8/10 is 48/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
12/21 = 12 × 10/21 × 10 = 120/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
8/10 = 8 × 21/10 × 21 = 168/210 - Add the two like fractions:
120/210 + 168/210 = 120 + 168/210 = 288/210 - 288/210 simplified gives 48/35
- So, 12/21 + 8/10 = 48/35
In mixed form: 113/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+8/10 12/21+16/10 12/42+8/10 12/21+8/20 36/21+8/10 12/21+24/10 12/63+8/10 12/21+8/30 60/21+8/10 12/21+40/10 12/21+8/50 84/21+8/10 12/21+56/10 12/21+8/70