Add 70/5 and 21/28
1st number: 14 0/5, 2nd number: 21/28
70/5 + 21/28 is 59/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
70/5 = 70 × 28/5 × 28 = 1960/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Add the two like fractions:
1960/140 + 105/140 = 1960 + 105/140 = 2065/140 - 2065/140 simplified gives 59/4
- So, 70/5 + 21/28 = 59/4
In mixed form: 143/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/5+42/28 70/10+21/28 70/5+21/56 70/5+63/28 70/15+21/28 70/5+21/84 70/25+21/28 70/35+21/28