Add 4/56 and 10/21
4/56 + 10/21 is 23/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
4/56 = 4 × 3/56 × 3 = 12/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
10/21 = 10 × 8/21 × 8 = 80/168 - Add the two like fractions:
12/168 + 80/168 = 12 + 80/168 = 92/168 - 92/168 simplified gives 23/42
- So, 4/56 + 10/21 = 23/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/56+10/21 4/56+20/21 4/56+10/42 12/56+10/21 4/56+30/21 4/56+10/63 20/56+10/21 4/56+50/21 28/56+10/21 4/56+70/21