Add 1/28 and 4/40
1/28 + 4/40 is 19/140.
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,
1/28 = 1 × 10/28 × 10 = 10/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
4/40 = 4 × 7/40 × 7 = 28/280 - Add the two like fractions:
10/280 + 28/280 = 10 + 28/280 = 38/280 - 38/280 simplified gives 19/140
- So, 1/28 + 4/40 = 19/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28+4/40 1/28+8/40 1/56+4/40 1/28+4/80 3/28+4/40 1/28+12/40 1/84+4/40 5/28+4/40 1/28+20/40 7/28+4/40 1/28+28/40