Add 8/70 and 27/21
1st number: 8/70, 2nd number: 1 6/21
8/70 + 27/21 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
8/70 = 8 × 3/70 × 3 = 24/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
27/21 = 27 × 10/21 × 10 = 270/210 - Add the two like fractions:
24/210 + 270/210 = 24 + 270/210 = 294/210 - 294/210 simplified gives 7/5
- So, 8/70 + 27/21 = 7/5
In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/70+27/21 8/70+54/21 8/70+27/42 24/70+27/21 8/70+81/21 8/70+27/63 40/70+27/21 56/70+27/21