Add 21/70 and 3/6
21/70 + 3/6 is 4/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Likewise, for the 2nd fraction, since 6 × 35 = 210,
3/6 = 3 × 35/6 × 35 = 105/210 - Add the two like fractions:
63/210 + 105/210 = 63 + 105/210 = 168/210 - 168/210 simplified gives 4/5
- So, 21/70 + 3/6 = 4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+3/6 21/70+3/12 63/70+3/6 21/70+9/6 21/70+3/18 21/70+15/6 21/70+3/30 21/70+21/6 21/70+3/42