Add 36/56 and 42/21
1st number: 36/56, 2nd number: 2 0/21
36/56 + 42/21 is 37/14.
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,
36/56 = 36 × 3/56 × 3 = 108/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
42/21 = 42 × 8/21 × 8 = 336/168 - Add the two like fractions:
108/168 + 336/168 = 108 + 336/168 = 444/168 - 444/168 simplified gives 37/14
- So, 36/56 + 42/21 = 37/14
In mixed form: 29/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/56+42/21 36/56+84/21 36/56+42/63