Add 21/35 and 80/70
1st number: 21/35, 2nd number: 1 10/70
21/35 + 80/70 is 61/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 70 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 70 × 1 = 70,
80/70 = 80 × 1/70 × 1 = 80/70 - Add the two like fractions:
42/70 + 80/70 = 42 + 80/70 = 122/70 - 122/70 simplified gives 61/35
- So, 21/35 + 80/70 = 61/35
In mixed form: 126/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35+80/70 21/70+80/70 63/35+80/70