Add 4/70 and 15/21
4/70 + 15/21 is 27/35.
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,
4/70 = 4 × 3/70 × 3 = 12/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
15/21 = 15 × 10/21 × 10 = 150/210 - Add the two like fractions:
12/210 + 150/210 = 12 + 150/210 = 162/210 - 162/210 simplified gives 27/35
- So, 4/70 + 15/21 = 27/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/70+15/21 4/70+30/21 4/70+15/42 12/70+15/21 4/70+45/21 4/70+15/63 20/70+15/21 4/70+75/21 28/70+15/21