Add 35/42 and 30/28
1st number: 35/42, 2nd number: 1 2/28
35/42 + 30/28 is 40/21.
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,
35/42 = 35 × 2/42 × 2 = 70/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
30/28 = 30 × 3/28 × 3 = 90/84 - Add the two like fractions:
70/84 + 90/84 = 70 + 90/84 = 160/84 - 160/84 simplified gives 40/21
- So, 35/42 + 30/28 = 40/21
In mixed form: 119/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42+30/28 35/42+60/28 35/84+30/28 35/42+30/56 35/42+90/28 35/42+30/84