Add 21/7 and 36/70
1st number: 3 0/7, 2nd number: 36/70
21/7 + 36/70 is 123/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
36/70 = 36 × 1/70 × 1 = 36/70 - Add the two like fractions:
210/70 + 36/70 = 210 + 36/70 = 246/70 - 246/70 simplified gives 123/35
- So, 21/7 + 36/70 = 123/35
In mixed form: 318/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/7+36/70 21/7+72/70 21/14+36/70 63/7+36/70 21/35+36/70 21/49+36/70