Add 4/56 and 12/21
4/56 + 12/21 is 9/14.
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,
12/21 = 12 × 8/21 × 8 = 96/168 - Add the two like fractions:
12/168 + 96/168 = 12 + 96/168 = 108/168 - 108/168 simplified gives 9/14
- So, 4/56 + 12/21 = 9/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/56+12/21 4/56+24/21 4/56+12/42 12/56+12/21 4/56+36/21 4/56+12/63 20/56+12/21 4/56+60/21 28/56+12/21 4/56+84/21