Add 10/42 and 8/28
10/42 + 8/28 is 11/21.
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,
10/42 = 10 × 2/42 × 2 = 20/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
8/28 = 8 × 3/28 × 3 = 24/84 - Add the two like fractions:
20/84 + 24/84 = 20 + 24/84 = 44/84 - 44/84 simplified gives 11/21
- So, 10/42 + 8/28 = 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+8/28 10/42+16/28 10/84+8/28 10/42+8/56 30/42+8/28 10/42+24/28 10/42+8/84 50/42+8/28 10/42+40/28 70/42+8/28 10/42+56/28