Add 30/42 and 10/28
30/42 + 10/28 is 15/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
30/42 = 30 × 2/42 × 2 = 60/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
10/28 = 10 × 3/28 × 3 = 30/84 - Add the two like fractions:
60/84 + 30/84 = 60 + 30/84 = 90/84 - 90/84 simplified gives 15/14
- So, 30/42 + 10/28 = 15/14
In mixed form: 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42+10/28 30/42+20/28 30/84+10/28 30/42+10/56 90/42+10/28 30/42+30/28 30/42+10/84 30/42+50/28 30/42+70/28