Add 10/42 and 8/56
10/42 + 8/56 is 8/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
10/42 = 10 × 4/42 × 4 = 40/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
8/56 = 8 × 3/56 × 3 = 24/168 - Add the two like fractions:
40/168 + 24/168 = 40 + 24/168 = 64/168 - 64/168 simplified gives 8/21
- So, 10/42 + 8/56 = 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+8/56 10/42+16/56 10/84+8/56 30/42+8/56 10/42+24/56 50/42+8/56 10/42+40/56 70/42+8/56