Add 70/28 and 5/40
1st number: 2 14/28, 2nd number: 5/40
70/28 + 5/40 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
70/28 = 70 × 10/28 × 10 = 700/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
5/40 = 5 × 7/40 × 7 = 35/280 - Add the two like fractions:
700/280 + 35/280 = 700 + 35/280 = 735/280 - 735/280 simplified gives 21/8
- So, 70/28 + 5/40 = 21/8
In mixed form: 25/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+10/40 70/56+5/40 70/28+5/80 70/28+15/40 70/84+5/40 70/28+25/40 70/28+35/40