Add 21/70 and 6/4
1st number: 21/70, 2nd number: 1 2/4
21/70 + 6/4 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
6/4 = 6 × 35/4 × 35 = 210/140 - Add the two like fractions:
42/140 + 210/140 = 42 + 210/140 = 252/140 - 252/140 simplified gives 9/5
- So, 21/70 + 6/4 = 9/5
In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+6/4 21/70+12/4 21/70+6/8 63/70+6/4 21/70+18/4 21/70+6/12 21/70+30/4 21/70+6/20 21/70+42/4 21/70+6/28