Add 18/4 and 3/7
1st number: 4 2/4, 2nd number: 3/7
18/4 + 3/7 is 69/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
18/4 = 18 × 7/4 × 7 = 126/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
3/7 = 3 × 4/7 × 4 = 12/28 - Add the two like fractions:
126/28 + 12/28 = 126 + 12/28 = 138/28 - 138/28 simplified gives 69/14
- So, 18/4 + 3/7 = 69/14
In mixed form: 413/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4+3/7 18/4+6/7 18/8+3/7 18/4+3/14 54/4+3/7 18/4+9/7 18/12+3/7 18/4+3/21 90/4+3/7 18/4+15/7 18/20+3/7 18/4+3/35 18/4+21/7 18/28+3/7 18/4+3/49