Add 12/10 and 9/3
1st number: 1 2/10, 2nd number: 3 0/3
12/10 + 9/3 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 3 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
12/10 = 12 × 3/10 × 3 = 36/30 - Likewise, for the 2nd fraction, since 3 × 10 = 30,
9/3 = 9 × 10/3 × 10 = 90/30 - Add the two like fractions:
36/30 + 90/30 = 36 + 90/30 = 126/30 - 126/30 simplified gives 21/5
- So, 12/10 + 9/3 = 21/5
In mixed form: 41/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/10+9/3 12/10+18/3 12/20+9/3 12/10+9/6 36/10+9/3 12/10+27/3 12/30+9/3 60/10+9/3 12/10+45/3 12/50+9/3 12/10+9/15 84/10+9/3 12/10+63/3 12/70+9/3 12/10+9/21