Add 35/21 and 12/56
1st number: 1 14/21, 2nd number: 12/56
35/21 + 12/56 is 79/42.
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,
35/21 = 35 × 8/21 × 8 = 280/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
12/56 = 12 × 3/56 × 3 = 36/168 - Add the two like fractions:
280/168 + 36/168 = 280 + 36/168 = 316/168 - 316/168 simplified gives 79/42
- So, 35/21 + 12/56 = 79/42
In mixed form: 137/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+12/56 35/21+24/56 35/42+12/56 35/21+36/56 35/63+12/56 35/21+60/56 35/21+84/56