Add 5/28 and 8/40
5/28 + 8/40 is 53/140.
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,
5/28 = 5 × 10/28 × 10 = 50/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
8/40 = 8 × 7/40 × 7 = 56/280 - Add the two like fractions:
50/280 + 56/280 = 50 + 56/280 = 106/280 - 106/280 simplified gives 53/140
- So, 5/28 + 8/40 = 53/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/28+8/40 5/28+16/40 5/56+8/40 5/28+8/80 15/28+8/40 5/28+24/40 5/84+8/40 25/28+8/40 35/28+8/40 5/28+56/40