Add 70/56 and 60/21
1st number: 1 14/56, 2nd number: 2 18/21
70/56 + 60/21 is 115/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
70/56 = 70 × 3/56 × 3 = 210/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
60/21 = 60 × 8/21 × 8 = 480/168 - Add the two like fractions:
210/168 + 480/168 = 210 + 480/168 = 690/168 - 690/168 simplified gives 115/28
- So, 70/56 + 60/21 = 115/28
In mixed form: 43/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/56+60/42 70/56+60/63