Add 28/56 and 10/42
28/56 + 10/42 is 31/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
28/56 = 28 × 3/56 × 3 = 84/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
10/42 = 10 × 4/42 × 4 = 40/168 - Add the two like fractions:
84/168 + 40/168 = 84 + 40/168 = 124/168 - 124/168 simplified gives 31/42
- So, 28/56 + 10/42 = 31/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56+20/42 28/56+10/84 84/56+10/42 28/56+30/42 28/56+50/42 28/56+70/42