Add 2/40 and 4/90
2/40 + 4/90 is 17/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
2/40 = 2 × 9/40 × 9 = 18/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
4/90 = 4 × 4/90 × 4 = 16/360 - Add the two like fractions:
18/360 + 16/360 = 18 + 16/360 = 34/360 - 34/360 simplified gives 17/180
- So, 2/40 + 4/90 = 17/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40+4/90 2/40+8/90 2/80+4/90 6/40+4/90 2/40+12/90 10/40+4/90 2/40+20/90 14/40+4/90 2/40+28/90