Add 18/56 and 84/40
1st number: 18/56, 2nd number: 2 4/40
18/56 + 84/40 is 339/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
18/56 = 18 × 5/56 × 5 = 90/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
84/40 = 84 × 7/40 × 7 = 588/280 - Add the two like fractions:
90/280 + 588/280 = 90 + 588/280 = 678/280 - 678/280 simplified gives 339/140
- So, 18/56 + 84/40 = 339/140
In mixed form: 259/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/56+84/40 18/56+84/80 54/56+84/40 90/56+84/40