Add 4/40 and 7/9
4/40 + 7/9 is 79/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
4/40 = 4 × 9/40 × 9 = 36/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
7/9 = 7 × 40/9 × 40 = 280/360 - Add the two like fractions:
36/360 + 280/360 = 36 + 280/360 = 316/360 - 316/360 simplified gives 79/90
- So, 4/40 + 7/9 = 79/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+7/9 4/40+14/9 4/80+7/9 4/40+7/18 12/40+7/9 4/40+21/9 4/40+7/27 20/40+7/9 4/40+35/9 4/40+7/45 28/40+7/9 4/40+49/9 4/40+7/63