Add 8/40 and 8/18
8/40 + 8/18 is 29/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
8/40 = 8 × 9/40 × 9 = 72/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
8/18 = 8 × 20/18 × 20 = 160/360 - Add the two like fractions:
72/360 + 160/360 = 72 + 160/360 = 232/360 - 232/360 simplified gives 29/45
- So, 8/40 + 8/18 = 29/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+8/18 8/40+16/18 8/80+8/18 8/40+8/36 24/40+8/18 8/40+24/18 8/40+8/54 8/40+40/18 8/40+8/90 56/40+8/18 8/40+56/18