Add 18/4 and 28/7
1st number: 4 2/4, 2nd number: 4 0/7
18/4 + 28/7 is 17/2.
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,
28/7 = 28 × 4/7 × 4 = 112/28 - Add the two like fractions:
126/28 + 112/28 = 126 + 112/28 = 238/28 - 238/28 simplified gives 17/2
- So, 18/4 + 28/7 = 17/2
In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4+28/7 18/4+56/7 18/8+28/7 18/4+28/14 54/4+28/7 18/4+84/7 18/12+28/7 18/4+28/21 90/4+28/7 18/20+28/7 18/4+28/35 18/28+28/7 18/4+28/49