Add 2/21 and 12/56
2/21 + 12/56 is 13/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
2/21 = 2 × 8/21 × 8 = 16/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
12/56 = 12 × 3/56 × 3 = 36/168 - Add the two like fractions:
16/168 + 36/168 = 16 + 36/168 = 52/168 - 52/168 simplified gives 13/42
- So, 2/21 + 12/56 = 13/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+12/56 2/21+24/56 2/42+12/56 6/21+12/56 2/21+36/56 2/63+12/56 10/21+12/56 2/21+60/56 14/21+12/56 2/21+84/56