Add 9/28 and 2/40
9/28 + 2/40 is 13/35.
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,
9/28 = 9 × 10/28 × 10 = 90/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
2/40 = 2 × 7/40 × 7 = 14/280 - Add the two like fractions:
90/280 + 14/280 = 90 + 14/280 = 104/280 - 104/280 simplified gives 13/35
- So, 9/28 + 2/40 = 13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28+2/40 9/28+4/40 9/56+2/40 9/28+2/80 27/28+2/40 9/28+6/40 9/84+2/40 45/28+2/40 9/28+10/40 63/28+2/40 9/28+14/40