Add 18/4 and 30/28
1st number: 4 2/4, 2nd number: 1 2/28
18/4 + 30/28 is 39/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 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 28 × 1 = 28,
30/28 = 30 × 1/28 × 1 = 30/28 - Add the two like fractions:
126/28 + 30/28 = 126 + 30/28 = 156/28 - 156/28 simplified gives 39/7
- So, 18/4 + 30/28 = 39/7
In mixed form: 54/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4+30/28 18/4+60/28 18/8+30/28 18/4+30/56 54/4+30/28 18/4+90/28 18/12+30/28 18/4+30/84 90/4+30/28 18/20+30/28 18/28+30/28