Add 18/28 and 40/7
1st number: 18/28, 2nd number: 5 5/7
18/28 + 40/7 is 89/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
18/28 = 18 × 1/28 × 1 = 18/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
40/7 = 40 × 4/7 × 4 = 160/28 - Add the two like fractions:
18/28 + 160/28 = 18 + 160/28 = 178/28 - 178/28 simplified gives 89/14
- So, 18/28 + 40/7 = 89/14
In mixed form: 65/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+40/7 18/28+80/7 18/56+40/7 18/28+40/14 54/28+40/7 18/84+40/7 18/28+40/21 90/28+40/7 18/28+40/35 18/28+40/49