Add 70/28 and 20/5
1st number: 2 14/28, 2nd number: 4 0/5
70/28 + 20/5 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 5 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
70/28 = 70 × 5/28 × 5 = 350/140 - Likewise, for the 2nd fraction, since 5 × 28 = 140,
20/5 = 20 × 28/5 × 28 = 560/140 - Add the two like fractions:
350/140 + 560/140 = 350 + 560/140 = 910/140 - 910/140 simplified gives 13/2
- So, 70/28 + 20/5 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+40/5 70/56+20/5 70/28+20/10 70/28+60/5 70/84+20/5 70/28+20/15 70/28+20/25 70/28+20/35