Add 18/14 and 18/40
1st number: 1 4/14, 2nd number: 18/40
18/14 + 18/40 is 243/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
18/14 = 18 × 20/14 × 20 = 360/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Add the two like fractions:
360/280 + 126/280 = 360 + 126/280 = 486/280 - 486/280 simplified gives 243/140
- So, 18/14 + 18/40 = 243/140
In mixed form: 1103/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/14+18/40 18/14+36/40 18/28+18/40 18/14+18/80 54/14+18/40 18/14+54/40 18/42+18/40 90/14+18/40 18/14+90/40 18/70+18/40 18/98+18/40