Add 8/21 and 4/70
8/21 + 4/70 is 46/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
8/21 = 8 × 10/21 × 10 = 80/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
4/70 = 4 × 3/70 × 3 = 12/210 - Add the two like fractions:
80/210 + 12/210 = 80 + 12/210 = 92/210 - 92/210 simplified gives 46/105
- So, 8/21 + 4/70 = 46/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+4/70 8/21+8/70 8/42+4/70 24/21+4/70 8/21+12/70 8/63+4/70 40/21+4/70 8/21+20/70 56/21+4/70 8/21+28/70