Add 21/10 and 40/35
1st number: 2 1/10, 2nd number: 1 5/35
21/10 + 40/35 is 227/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 35 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
21/10 = 21 × 7/10 × 7 = 147/70 - Likewise, for the 2nd fraction, since 35 × 2 = 70,
40/35 = 40 × 2/35 × 2 = 80/70 - Add the two like fractions:
147/70 + 80/70 = 147 + 80/70 = 227/70 - So, 21/10 + 40/35 = 227/70
In mixed form: 317/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+40/35 21/10+80/35 21/20+40/35 21/10+40/70 63/10+40/35 21/30+40/35 21/50+40/35 21/70+40/35