Add 9/18 and 4/40
9/18 + 4/40 is 3/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
9/18 = 9 × 20/18 × 20 = 180/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
4/40 = 4 × 9/40 × 9 = 36/360 - Add the two like fractions:
180/360 + 36/360 = 180 + 36/360 = 216/360 - 216/360 simplified gives 3/5
- So, 9/18 + 4/40 = 3/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18+8/40 9/36+4/40 9/18+4/80 27/18+4/40 9/18+12/40 9/54+4/40 45/18+4/40 9/18+20/40 9/90+4/40 63/18+4/40 9/18+28/40