Add 42/56 and 15/12
1st number: 42/56, 2nd number: 1 3/12
42/56 + 15/12 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 12 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
42/56 = 42 × 3/56 × 3 = 126/168 - Likewise, for the 2nd fraction, since 12 × 14 = 168,
15/12 = 15 × 14/12 × 14 = 210/168 - Add the two like fractions:
126/168 + 210/168 = 126 + 210/168 = 336/168 - 336/168 simplified gives 2/1
- So, 42/56 + 15/12 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+15/12 42/56+30/12 42/56+15/24 42/56+45/12 42/56+15/36 42/56+75/12 42/56+15/60 42/56+15/84