Add 21/35 and 12/10
1st number: 21/35, 2nd number: 1 2/10
21/35 + 12/10 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
21/35 = 21 × 2/35 × 2 = 42/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
12/10 = 12 × 7/10 × 7 = 84/70 - Add the two like fractions:
42/70 + 84/70 = 42 + 84/70 = 126/70 - 126/70 simplified gives 9/5
- So, 21/35 + 12/10 = 9/5
In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35+12/10 21/35+24/10 21/70+12/10 21/35+12/20 63/35+12/10 21/35+36/10 21/35+12/30 21/35+60/10 21/35+12/50 21/35+84/10 21/35+12/70