Add 7/70 and 84/4
1st number: 7/70, 2nd number: 21 0/4
7/70 + 84/4 is 211/10.
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,
7/70 = 7 × 2/70 × 2 = 14/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
84/4 = 84 × 35/4 × 35 = 2940/140 - Add the two like fractions:
14/140 + 2940/140 = 14 + 2940/140 = 2954/140 - 2954/140 simplified gives 211/10
- So, 7/70 + 84/4 = 211/10
In mixed form: 211/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70+84/4 7/70+84/8 21/70+84/4 7/70+84/12 35/70+84/4 7/70+84/20 49/70+84/4 7/70+84/28