Add 7/28 and 84/70
1st number: 7/28, 2nd number: 1 14/70
7/28 + 84/70 is 29/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
7/28 = 7 × 5/28 × 5 = 35/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
84/70 = 84 × 2/70 × 2 = 168/140 - Add the two like fractions:
35/140 + 168/140 = 35 + 168/140 = 203/140 - 203/140 simplified gives 29/20
- So, 7/28 + 84/70 = 29/20
In mixed form: 19/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28+84/70 7/56+84/70 21/28+84/70 7/84+84/70 35/28+84/70 49/28+84/70