Add 6/7 and 18/40
6/7 + 18/40 is 183/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
6/7 = 6 × 40/7 × 40 = 240/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Add the two like fractions:
240/280 + 126/280 = 240 + 126/280 = 366/280 - 366/280 simplified gives 183/140
- So, 6/7 + 18/40 = 183/140
In mixed form: 143/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/7+18/40 6/7+36/40 6/14+18/40 6/7+18/80 18/7+18/40 6/7+54/40 6/21+18/40 30/7+18/40 6/7+90/40 6/35+18/40 42/7+18/40 6/49+18/40