Add 21/70 and 40/6
1st number: 21/70, 2nd number: 6 4/6
21/70 + 40/6 is 209/30.
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,
40/6 = 40 × 35/6 × 35 = 1400/210 - Add the two like fractions:
63/210 + 1400/210 = 63 + 1400/210 = 1463/210 - 1463/210 simplified gives 209/30
- So, 21/70 + 40/6 = 209/30
In mixed form: 629/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+40/6 21/70+80/6 21/70+40/12 63/70+40/6 21/70+40/18 21/70+40/30 21/70+40/42