Add 18/40 and 14/30
18/40 + 14/30 is 11/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
18/40 = 18 × 3/40 × 3 = 54/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
14/30 = 14 × 4/30 × 4 = 56/120 - Add the two like fractions:
54/120 + 56/120 = 54 + 56/120 = 110/120 - 110/120 simplified gives 11/12
- So, 18/40 + 14/30 = 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+14/30 18/40+28/30 18/80+14/30 18/40+14/60 54/40+14/30 18/40+42/30 18/40+14/90 90/40+14/30 18/40+70/30 18/40+98/30